DevSecOps Incident Response and Threat Management
Overview
DevSecOps incident response and threat management represent the operational aspect of security in continuous delivery environments. This article explores how to build resilient incident response capabilities that can rapidly detect, contain, and remediate security incidents while maintaining operational continuity in fast-paced DevSecOps environments.
Incident Response in DevSecOps Environments
Challenges of Incident Response in Continuous Delivery
Velocity vs. Security Response
Traditional incident response models struggle with the high velocity of DevSecOps environments:
Scale and Frequency
- High Deployment Frequency: Multiple deployments per day create numerous potential incident triggers
- Complex Infrastructure: Microservices and containerized environments increase attack surface
- Ephemeral Resources: Short-lived containers and instances complicate forensic analysis
- Distributed Systems: Incidents may span multiple services and teams
Operational Complexity
- Shared Responsibility: Incident response responsibilities distributed across teams
- Dynamic Infrastructure: Infrastructure changes constantly, affecting incident response procedures
- Interconnected Services: Incidents in one service may cascade to others
- Limited Downtime Windows: Business requirements for continuous availability
Traditional vs. DevSecOps Response Models
Traditional Incident Response
- Centralized Teams: Dedicated incident response teams
- Formal Procedures: Structured, documented response procedures
- Static Infrastructure: Known, stable infrastructure for investigation
- Scheduled Maintenance: Planned windows for remediation
DevSecOps Incident Response
- Distributed Teams: Incident response integrated into development teams
- Automated Procedures: Automated detection and initial response
- Dynamic Infrastructure: Rapidly changing infrastructure requires adaptive procedures
- Continuous Operations: Remediation during live operations
Incident Response Framework Design
NIST Cybersecurity Framework Integration
Adapting the NIST framework for DevSecOps environments:
Identify Phase
- Asset Inventory: Automated asset discovery and tracking
- Risk Assessment: Continuous risk assessment and prioritization
- Governance: Integrated security governance in development processes
- Supply Chain: Continuous monitoring of third-party components
Protect Phase
- Access Control: Automated IAM and access management
- Awareness Training: Continuous security education for development teams
- Data Security: Automated data protection and classification
- Information Protection: Security-by-design in all development processes
Detect Phase
- Anomalies and Events: Automated anomaly detection across all layers
- Security Continuous Monitoring: Real-time monitoring of all systems
- Detection Processes: Automated threat detection and alerting
- Threat Intelligence: Continuous threat intelligence integration
Respond Phase
- Response Planning: Automated incident response playbooks
- Communications: Automated communication and escalation
- Analysis: Automated forensic analysis and root cause identification
- Mitigation: Automated containment and remediation
- Improvements: Automated lessons learned and process improvement
Recover Phase
- Recovery Planning: Automated recovery procedures
- Improvements: Automated incorporation of lessons learned
- Communications: Automated stakeholder communication
Incident Classification and Prioritization
Incident Categories
Classifying incidents based on impact and scope:
PYTHON
# Example: Incident classification system
from enum import Enum
from dataclasses import dataclass
from typing import Dict, List, Optional
import json
from datetime import datetime
class IncidentSeverity(Enum):
CRITICAL = "critical"
HIGH = "high"
MEDIUM = "medium"
LOW = "low"
INFORMATIONAL = "informational"
class IncidentCategory(Enum):
APPLICATION_SECURITY = "application_security"
INFRASTRUCTURE_SECURITY = "infrastructure_security"
DATA_BREACH = "data_breach"
COMPLIANCE_VIOLATION = "compliance_violation"
SERVICE_AVAILABILITY = "service_availability"
DEPLOYMENT_ISSUE = "deployment_issue"
class IncidentType(Enum):
MALWARE_DETECTION = "malware_detection"
UNAUTHORIZED_ACCESS = "unauthorized_access"
DATA_EXPOSURE = "data_exposure"
DDOS_ATTACK = "ddos_attack"
PRIVILEGE_ESCALATION = "privilege_escalation"
CONFIGURATION_MISUSE = "configuration_misuse"
SUPPLY_CHAIN_COMPROMISE = "supply_chain_compromise"
INSIDER_THREAT = "insider_threat"
@dataclass
class Incident:
id: str
title: str
description: str
severity: IncidentSeverity
category: IncidentCategory
incident_type: IncidentType
detected_at: datetime
source: str # Where incident was detected
affected_services: List[str]
affected_users: int
estimated_impact: str
status: str = "investigating"
assigned_to: Optional[str] = None
escalated_to: Optional[str] = None
class IncidentClassifier:
def __init__(self):
self.classification_rules = self.load_classification_rules()
def load_classification_rules(self) -> Dict:
"""
Load incident classification rules
"""
return {
"application_security": {
"high_severity_indicators": [
"sql_injection",
"remote_code_execution",
"authentication_bypass"
],
"medium_severity_indicators": [
"cross_site_scripting",
"insecure_deserialization"
]
},
"data_breach": {
"critical_indicators": [
"personal_identifiable_information_exposed",
"credit_card_numbers_exposed",
"protected_health_information_exposed"
]
},
"infrastructure_security": {
"critical_indicators": [
"root_level_compromise",
"network_perimeter_breach",
"cloud_admin_compromise"
]
}
}
def classify_incident(self, raw_alert: Dict) -> Incident:
"""
Classify an incoming security alert as an incident
"""
# Determine severity based on indicators
severity = self.determine_severity(raw_alert)
# Determine category based on context
category = self.determine_category(raw_alert)
# Determine specific incident type
incident_type = self.determine_incident_type(raw_alert)
# Extract affected services
affected_services = self.extract_affected_services(raw_alert)
# Create incident object
incident = Incident(
id=f"INC-{datetime.utcnow().strftime('%Y%m%d')}-{hash(str(raw_alert)) % 10000:04d}",
title=raw_alert.get('title', 'Security Alert'),
description=raw_alert.get('description', ''),
severity=severity,
category=category,
incident_type=incident_type,
detected_at=datetime.utcnow(),
source=raw_alert.get('source', 'unknown'),
affected_services=affected_services,
affected_users=raw_alert.get('affected_users', 0),
estimated_impact=self.estimate_impact(severity, category, affected_services),
status="investigating"
)
return incident
def determine_severity(self, alert: Dict) -> IncidentSeverity:
"""
Determine incident severity based on alert characteristics
"""
# Check for critical indicators
if any(indicator in alert.get('indicators', []) for indicator in [
'root_compromise', 'data_exfiltration_detected', 'ransomware_detected'
]):
return IncidentSeverity.CRITICAL
# Check for high severity indicators
if any(indicator in alert.get('indicators', []) for indicator in [
'unauthorized_access', 'privilege_escalation', 'sql_injection'
]):
return IncidentSeverity.HIGH
# Check for medium severity indicators
if any(indicator in alert.get('indicators', []) for indicator in [
'suspicious_activity', 'failed_login_attempts', 'unusual_api_calls'
]):
return IncidentSeverity.MEDIUM
return IncidentSeverity.LOW
def determine_category(self, alert: Dict) -> IncidentCategory:
"""
Determine incident category based on alert characteristics
"""
# Map alert source to category
source_map = {
'waf': IncidentCategory.APPLICATION_SECURITY,
'ids': IncidentCategory.INFRASTRUCTURE_SECURITY,
'detection_service': IncidentCategory.DATA_BREACH,
'compliance_monitor': IncidentCategory.COMPLIANCE_VIOLATION,
'availability_monitor': IncidentCategory.SERVICE_AVAILABILITY,
'deployment_monitor': IncidentCategory.DEPLOYMENT_ISSUE
}
source = alert.get('source', 'unknown').lower()
for key, category in source_map.items():
if key in source:
return category
# Default to application security if no specific mapping found
return IncidentCategory.APPLICATION_SECURITY
def determine_incident_type(self, alert: Dict) -> IncidentType:
"""
Determine specific incident type
"""
# Check for specific indicators
indicators = alert.get('indicators', [])
type_map = {
'malware': IncidentType.MALWARE_DETECTION,
'unauthorized_access': IncidentType.UNAUTHORIZED_ACCESS,
'data_exposure': IncidentType.DATA_EXPOSURE,
'ddos': IncidentType.DDOS_ATTACK,
'privilege_escalation': IncidentType.PRIVILEGE_ESCALATION,
'misconfiguration': IncidentType.CONFIGURATION_MISUSE,
'supply_chain': IncidentType.SUPPLY_CHAIN_COMPROMISE,
'insider': IncidentType.INSIDER_THREAT
}
for indicator in indicators:
for key, incident_type in type_map.items():
if key in indicator.lower():
return incident_type
# Default to unauthorized access if no specific type identified
return IncidentType.UNAUTHORIZED_ACCESS
def extract_affected_services(self, alert: Dict) -> List[str]:
"""
Extract affected services from alert
"""
affected = []
# Extract from alert metadata
if 'affected_services' in alert:
affected.extend(alert['affected_services'])
# Extract from resource identifiers
if 'resources' in alert:
for resource in alert['resources']:
if 'service' in resource:
affected.append(resource['service'])
# Extract from application context
if 'application' in alert:
affected.append(alert['application'])
return list(set(affected)) # Remove duplicates
def estimate_impact(self, severity: IncidentSeverity, category: IncidentCategory, affected_services: List[str]) -> str:
"""
Estimate incident impact
"""
impact_scores = {
IncidentSeverity.CRITICAL: 10,
IncidentSeverity.HIGH: 7,
IncidentSeverity.MEDIUM: 4,
IncidentSeverity.LOW: 2,
IncidentSeverity.INFORMATIONAL: 1
}
# Base impact on severity
impact_score = impact_scores[severity]
# Adjust for category
if category in [IncidentCategory.DATA_BREACH, IncidentCategory.COMPLIANCE_VIOLATION]:
impact_score += 2 # Higher impact for data/compliance incidents
# Adjust for number of affected services
impact_score += len(affected_services)
# Convert to qualitative impact
if impact_score >= 15:
return "Severe - Significant business impact"
elif impact_score >= 10:
return "High - Major business impact"
elif impact_score >= 6:
return "Medium - Moderate business impact"
else:
return "Low - Minimal business impact"
# Example usage
classifier = IncidentClassifier()
# Example security alert
sample_alert = {
"title": "SQL Injection Attempt Detected",
"description": "Multiple SQL injection attempts detected on user authentication endpoint",
"source": "web_application_firewall",
"indicators": ["sql_injection", "unauthorized_access_attempt"],
"resources": [
{"service": "auth-service", "instance": "auth-service-123"},
{"service": "user-service", "instance": "user-service-456"}
],
"application": "customer_portal",
"affected_users": 0,
"timestamp": datetime.utcnow().isoformat()
}
# Classify the incident
incident = classifier.classify_incident(sample_alert)
print(f"Classified incident: {incident.id}")
print(f"Severity: {incident.severity.value}")
print(f"Category: {incident.category.value}")
print(f"Impact: {incident.estimated_impact}")Automated Escalation Rules
PYTHON
# Example: Automated incident escalation system
class IncidentEscalationSystem:
def __init__(self):
self.escalation_rules = self.define_escalation_rules()
self.response_teams = self.load_response_teams()
def define_escalation_rules(self) -> Dict:
"""
Define escalation rules based on incident characteristics
"""
return {
"critical_severity": {
"immediate_escalation": True,
"notification_targets": ["security_ops", "cto", "legal"],
"maximum_response_time": 15 # minutes
},
"data_breach": {
"immediate_escalation": True,
"notification_targets": ["privacy_officer", "legal", "executive"],
"regulatory_notification_required": True
},
"service_outage": {
"business_impact": True,
"notification_targets": ["operations", "product_managers", "customers"]
},
"supply_chain": {
"wide_impact": True,
"notification_targets": ["security", "engineering", "vendor_management"]
}
}
def load_response_teams(self) -> Dict:
"""
Load response team information
"""
return {
"security_ops": {
"contact": "[email protected]",
"members": ["Alice", "Bob", "Charlie"],
"on_call_rotation": "24x7"
},
"engineering": {
"contact": "[email protected]",
"members": ["David", "Eve", "Frank"],
"on_call_rotation": "business_hours"
},
"legal": {
"contact": "[email protected]",
"members": ["Grace", "Heidi"],
"on_call_rotation": "business_hours"
}
}
def determine_escalation_path(self, incident: Incident) -> Dict:
"""
Determine escalation path for an incident
"""
escalation_path = {
"immediate_escalation": False,
"teams_to_notify": [],
"regulatory_notification_required": False,
"executive_notification_required": False,
"escalation_reasons": []
}
# Check for critical severity
if incident.severity == IncidentSeverity.CRITICAL:
escalation_path["immediate_escalation"] = True
escalation_path["teams_to_notify"].extend(["security_ops", "executive"])
escalation_path["escalation_reasons"].append("Critical severity incident")
# Check for data breach category
if incident.category == IncidentCategory.DATA_BREACH:
escalation_path["regulatory_notification_required"] = True
escalation_path["teams_to_notify"].extend(["privacy_officer", "legal"])
escalation_path["executive_notification_required"] = True
escalation_path["escalation_reasons"].append("Data breach detected")
# Check for compliance violation
if incident.category == IncidentCategory.COMPLIANCE_VIOLATION:
escalation_path["teams_to_notify"].append("compliance_team")
escalation_path["regulatory_notification_required"] = True
escalation_path["escalation_reasons"].append("Compliance violation detected")
# Check for service availability issues
if incident.category == IncidentCategory.SERVICE_AVAILABILITY:
escalation_path["teams_to_notify"].append("operations")
escalation_path["executive_notification_required"] = len(incident.affected_services) > 3
escalation_path["escalation_reasons"].append("Service availability impacted")
# Remove duplicates
escalation_path["teams_to_notify"] = list(set(escalation_path["teams_to_notify"]))
return escalation_path
def execute_escalation(self, incident: Incident):
"""
Execute escalation for an incident
"""
escalation_path = self.determine_escalation_path(incident)
# Send notifications to required teams
for team_name in escalation_path["teams_to_notify"]:
if team_name in self.response_teams:
team = self.response_teams[team_name]
self.send_notification(
team["contact"],
f"Incident {incident.id} requires immediate attention",
incident
)
# Handle regulatory notifications if required
if escalation_path["regulatory_notification_required"]:
self.handle_regulatory_notification(incident)
# Handle executive notifications if required
if escalation_path["executive_notification_required"]:
self.handle_executive_notification(incident)
print(f"Escalation executed for incident {incident.id}")
return escalation_path
# Example usage
escalation_system = IncidentEscalationSystem()
# Example incident that should trigger escalation
critical_incident = Incident(
id="TEST-INC-001",
title="Critical Security Breach",
description="Unauthorized access to customer database detected",
severity=IncidentSeverity.CRITICAL,
category=IncidentCategory.DATA_BREACH,
incident_type=IncidentType.UNAUTHORIZED_ACCESS,
detected_at=datetime.utcnow(),
source="database_monitor",
affected_services=["customer_db", "api_gateway"],
affected_users=10000,
estimated_impact="Severe - Significant business impact"
)
escalation_result = escalation_system.execute_escalation(critical_incident)
print(f"Escalation result: {escalation_result}")Threat Intelligence Integration
Threat Intelligence in DevSecOps
Continuous Threat Monitoring
Implementing continuous threat intelligence in DevSecOps environments:
PYTHON
# Example: Threat intelligence integration system
import requests
import feedparser
from datetime import datetime, timedelta
import re
from typing import List, Dict, Any
class ThreatIntelligenceFeed:
def __init__(self, feed_urls: List[str]):
self.feed_urls = feed_urls
self.last_update = None
self.threat_indicators = []
self.ioc_cache = {} # Indicator of Compromise cache
def fetch_threat_feeds(self) -> List[Dict[str, Any]]:
"""
Fetch threat intelligence from multiple feeds
"""
all_threats = []
for feed_url in self.feed_urls:
try:
if feed_url.endswith('.rss') or feed_url.endswith('.xml'):
# RSS/Atom feed
feed = feedparser.parse(feed_url)
threats = self.parse_rss_feed(feed)
else:
# JSON feed
response = requests.get(feed_url)
threats = response.json()
all_threats.extend(threats)
except Exception as e:
print(f"Error fetching threat feed {feed_url}: {str(e)}")
return all_threats
def parse_rss_feed(self, feed) -> List[Dict[str, Any]]:
"""
Parse RSS threat feed
"""
threats = []
for entry in feed.entries:
threat = {
'title': entry.title,
'description': getattr(entry, 'summary', ''),
'published': getattr(entry, 'published', ''),
'link': getattr(entry, 'link', ''),
'severity': self.assess_threat_severity(entry.title, entry.summary if hasattr(entry, 'summary') else ''),
'indicators': self.extract_indicators(entry.summary if hasattr(entry, 'summary') else ''),
'tags': self.extract_tags(entry.tags if hasattr(entry, 'tags', []) else [])
}
threats.append(threat)
return threats
def assess_threat_severity(self, title: str, description: str) -> str:
"""
Assess threat severity based on title and description
"""
high_severity_keywords = [
'critical', 'urgent', 'exploit', 'zero-day', 'ransomware',
'data-breach', 'compromise', 'attack'
]
medium_severity_keywords = [
'vulnerability', 'patch', 'security-update', 'advisory'
]
title_lower = title.lower()
desc_lower = description.lower()
for keyword in high_severity_keywords:
if keyword in title_lower or keyword in desc_lower:
return 'high'
for keyword in medium_severity_keywords:
if keyword in title_lower or keyword in desc_lower:
return 'medium'
return 'low'
def extract_indicators(self, text: str) -> List[str]:
"""
Extract IOCs from threat text
"""
indicators = []
# Extract IP addresses
ip_pattern = r'\b(?:[0-9]{1,3}\.){3}[0-9]{1,3}\b'
ips = re.findall(ip_pattern, text)
indicators.extend(ips)
# Extract domains
domain_pattern = r'\b[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}\b'
domains = re.findall(domain_pattern, text)
# Filter out common domains
indicators.extend([d for d in domains if d not in ['example.com', 'test.com']])
# Extract URLs
url_pattern = r'https?://[^\s<>"{}|\\^`\[\]]+'
urls = re.findall(url_pattern, text)
indicators.extend(urls)
# Extract file hashes (MD5, SHA-1, SHA-256)
hash_patterns = [
r'\b[a-fA-F0-9]{32}\b', # MD5
r'\b[a-fA-F0-9]{40}\b', # SHA-1
r'\b[a-fA-F0-9]{64}\b' # SHA-256
]
for pattern in hash_patterns:
hashes = re.findall(pattern, text)
indicators.extend(hashes)
return list(set(indicators)) # Remove duplicates
def extract_tags(self, tags: List[Dict]) -> List[str]:
"""
Extract tags from feed entry
"""
return [tag.term for tag in tags if hasattr(tag, 'term')]
def update_threat_indicators(self):
"""
Update threat indicators from feeds
"""
new_threats = self.fetch_threat_feeds()
# Update internal threat indicators
for threat in new_threats:
for indicator in threat['indicators']:
self.ioc_cache[indicator] = {
'threat': threat,
'first_seen': datetime.utcnow(),
'last_seen': datetime.utcnow()
}
self.last_update = datetime.utcnow()
self.threat_indicators = new_threats
class DevSecOpsThreatMonitor:
def __init__(self, threat_feeds: List[str]):
self.threat_feed = ThreatIntelligenceFeed(threat_feeds)
self.active_monitors = []
self.alert_subscribers = []
def start_monitoring(self):
"""
Start continuous threat monitoring
"""
# Update threat indicators
self.threat_feed.update_threat_indicators()
# Set up monitoring for various data sources
self.setup_log_monitoring()
self.setup_network_monitoring()
self.setup_application_monitoring()
print("Threat monitoring started")
def setup_log_monitoring(self):
"""
Set up log monitoring for threat indicators
"""
# This would typically connect to your logging system
log_monitor = {
'name': 'log_monitor',
'data_source': 'centralized_logs',
'ioc_matcher': self.match_iocs_in_logs,
'frequency': 'real_time'
}
self.active_monitors.append(log_monitor)
def setup_network_monitoring(self):
"""
Set up network monitoring for threat indicators
"""
network_monitor = {
'name': 'network_monitor',
'data_source': 'network_traffic',
'ioc_matcher': self.match_iocs_in_network,
'frequency': 'real_time'
}
self.active_monitors.append(network_monitor)
def setup_application_monitoring(self):
"""
Set up application monitoring for threat indicators
"""
app_monitor = {
'name': 'application_monitor',
'data_source': 'application_logs',
'ioc_matcher': self.match_iocs_in_app_logs,
'frequency': 'real_time'
}
self.active_monitors.append(app_monitor)
def match_iocs_in_logs(self, log_entry: Dict[str, Any]) -> List[Dict[str, Any]]:
"""
Match IOCs in log entries
"""
matches = []
# Convert log entry to searchable text
log_text = self.log_entry_to_text(log_entry)
# Check against cached IOCs
for ioc, ioc_info in self.threat_feed.ioc_cache.items():
if ioc.lower() in log_text.lower():
match = {
'ioc': ioc,
'matched_in': 'logs',
'log_entry': log_entry,
'threat_info': ioc_info['threat'],
'match_confidence': 0.9 # High confidence for direct match
}
matches.append(match)
return matches
def match_iocs_in_network(self, network_data: Dict[str, Any]) -> List[Dict[str, Any]]:
"""
Match IOCs in network data
"""
matches = []
# Check network data for IOCs
for ioc, ioc_info in self.threat_feed.ioc_cache.items():
# Check if IOC is an IP address
if re.match(r'\b(?:[0-9]{1,3}\.){3}[0-9]{1,3}\b', ioc):
if network_data.get('destination_ip') == ioc or network_data.get('source_ip') == ioc:
match = {
'ioc': ioc,
'matched_in': 'network',
'network_data': network_data,
'threat_info': ioc_info['threat'],
'match_confidence': 0.8
}
matches.append(match)
# Check for domain matches
elif '.' in ioc and len(ioc) > 3: # Likely a domain
if network_data.get('destination_domain') == ioc:
match = {
'ioc': ioc,
'matched_in': 'network',
'network_data': network_data,
'threat_info': ioc_info['threat'],
'match_confidence': 0.7
}
matches.append(match)
return matches
def match_iocs_in_app_logs(self, app_log: Dict[str, Any]) -> List[Dict[str, Any]]:
"""
Match IOCs in application logs
"""
matches = []
# Convert app log to searchable text
log_text = self.app_log_to_text(app_log)
# Check against cached IOCs
for ioc, ioc_info in self.threat_feed.ioc_cache.items():
if ioc.lower() in log_text.lower():
match = {
'ioc': ioc,
'matched_in': 'application_logs',
'app_log': app_log,
'threat_info': ioc_info['threat'],
'match_confidence': 0.85
}
matches.append(match)
return matches
def log_entry_to_text(self, log_entry: Dict[str, Any]) -> str:
"""
Convert log entry to searchable text
"""
text_parts = []
for key, value in log_entry.items():
if isinstance(value, str):
text_parts.append(value)
elif isinstance(value, (int, float)):
text_parts.append(str(value))
return ' '.join(text_parts)
def app_log_to_text(self, app_log: Dict[str, Any]) -> str:
"""
Convert app log to searchable text
"""
text_parts = []
if 'message' in app_log:
text_parts.append(app_log['message'])
if 'params' in app_log:
for param_value in app_log['params'].values():
if isinstance(param_value, str):
text_parts.append(param_value)
return ' '.join(text_parts)
def monitor_for_threats(self) -> List[Dict[str, Any]]:
"""
Monitor all data sources for threats
"""
all_matches = []
for monitor in self.active_monitors:
# In a real implementation, this would fetch recent data from the data source
# For this example, we'll simulate with mock data
recent_data = self.get_recent_data(monitor['data_source'])
for data_item in recent_data:
matches = monitor['ioc_matcher'](data_item)
all_matches.extend(matches)
# Filter and prioritize matches
prioritized_matches = self.prioritize_matches(all_matches)
return prioritized_matches
def get_recent_data(self, data_source: str) -> List[Dict[str, Any]]:
"""
Get recent data from data source (mock implementation)
"""
# This would connect to actual data sources in a real implementation
mock_data = {
'centralized_logs': [
{'timestamp': '2023-12-01T10:30:00Z', 'message': 'Connection from malicious IP 192.168.1.100', 'level': 'WARNING'},
{'timestamp': '2023-12-01T10:31:00Z', 'message': 'Suspicious API call detected', 'level': 'INFO'}
],
'network_traffic': [
{'source_ip': '192.168.1.100', 'destination_ip': '10.0.0.1', 'port': 443, 'protocol': 'HTTPS'},
{'source_ip': '203.0.113.42', 'destination_ip': '10.0.0.5', 'port': 80, 'protocol': 'HTTP'}
],
'application_logs': [
{'timestamp': '2023-12-01T10:30:00Z', 'message': 'SQL injection attempt', 'user_id': '12345', 'ip_address': '192.168.1.100'},
{'timestamp': '2023-12-01T10:31:00Z', 'message': 'Successful login', 'user_id': '67890', 'ip_address': '192.168.1.50'}
]
}
return mock_data.get(data_source, [])
def prioritize_matches(self, matches: List[Dict[str, Any]]) -> List[Dict[str, Any]]:
"""
Prioritize threat matches based on severity and confidence
"""
# Sort by threat severity and match confidence
def match_priority(match):
threat_severity = match['threat_info']['severity']
confidence = match['match_confidence']
severity_weights = {'high': 3, 'medium': 2, 'low': 1}
severity_weight = severity_weights.get(threat_severity, 1)
return (severity_weight * 100) + (confidence * 10)
return sorted(matches, key=match_priority, reverse=True)
# Example usage
threat_feeds = [
'https://feeds.feedburner.com/ThreatPost',
'https://www.cisa.gov/cybersecurity-advisories/all.xml'
]
threat_monitor = DevSecOpsThreatMonitor(threat_feeds)
threat_monitor.start_monitoring()
# Monitor for threats
threat_matches = threat_monitor.monitor_for_threats()
print(f"Found {len(threat_matches)} potential threats")
for match in threat_matches[:3]: # Show first 3 matches
print(f"Match: {match['ioc']} - Confidence: {match['match_confidence']}")
print(f"Threat: {match['threat_info']['title']}")
print("---")Automated Threat Response
Threat Response Orchestration
PYTHON
# Example: Threat response orchestration system
import asyncio
import aiohttp
from datetime import datetime
from typing import Dict, List, Any
class ThreatResponseOrchestrator:
def __init__(self):
self.response_playbooks = self.load_response_playbooks()
self.security_tools = self.initialize_security_tools()
self.response_history = []
def load_response_playbooks(self) -> Dict[str, Any]:
"""
Load threat response playbooks
"""
return {
'malware_detection': {
'name': 'Malware Detection Response',
'steps': [
{'action': 'contain_system', 'priority': 1},
{'action': 'collect_forensics', 'priority': 2},
{'action': 'analyze_malware', 'priority': 3},
{'action': 'remediate', 'priority': 4},
{'action': 'restore_system', 'priority': 5}
],
'required_tools': ['EDR', 'forensics_tool', 'malware_analyzer']
},
'ddos_attack': {
'name': 'DDoS Attack Response',
'steps': [
{'action': 'activate_mitigation', 'priority': 1},
{'action': 'monitor_traffic', 'priority': 2},
{'action': 'adjust_rate_limits', 'priority': 3},
{'action': 'coordinate_with_isp', 'priority': 4}
],
'required_tools': ['firewall', 'traffic_analyzer', 'rate_limiter']
},
'data_exfiltration': {
'name': 'Data Exfiltration Response',
'steps': [
{'action': 'block_exfil_channels', 'priority': 1},
{'action': 'preserve_evidence', 'priority': 2},
{'action': 'investigate_source', 'priority': 3},
{'action': 'notify_stakeholders', 'priority': 4}
],
'required_tools': ['IDS', 'DLP', 'forensics_tool']
}
}
def initialize_security_tools(self) -> Dict[str, Any]:
"""
Initialize connections to security tools
"""
return {
'EDR': {'connected': True, 'api_endpoint': 'https://edr.company.com/api'},
'firewall': {'connected': True, 'api_endpoint': 'https://firewall.company.com/api'},
'IDS': {'connected': True, 'api_endpoint': 'https://ids.company.com/api'},
'DLP': {'connected': True, 'api_endpoint': 'https://dlp.company.com/api'},
'forensics_tool': {'connected': True, 'api_endpoint': 'https://forensics.company.com/api'},
'malware_analyzer': {'connected': True, 'api_endpoint': 'https://malware.company.com/api'},
'traffic_analyzer': {'connected': True, 'api_endpoint': 'https://traffic.company.com/api'},
'rate_limiter': {'connected': True, 'api_endpoint': 'https://rate-limit.company.com/api'}
}
async def execute_response_plan(self, threat_type: str, threat_details: Dict[str, Any]) -> Dict[str, Any]:
"""
Execute automated response plan for a threat
"""
if threat_type not in self.response_playbooks:
return {'error': f'No playbook found for threat type: {threat_type}'}
playbook = self.response_playbooks[threat_type]
# Check if required tools are available
for tool in playbook['required_tools']:
if tool not in self.security_tools or not self.security_tools[tool]['connected']:
return {'error': f'Required tool {tool} is not available'}
# Execute response steps
results = {
'threat_type': threat_type,
'threat_details': threat_details,
'start_time': datetime.utcnow().isoformat(),
'steps_executed': [],
'errors': []
}
# Sort steps by priority
sorted_steps = sorted(playbook['steps'], key=lambda x: x['priority'])
for step in sorted_steps:
try:
step_result = await self.execute_step(step, threat_details)
results['steps_executed'].append({
'step': step['action'],
'status': 'success',
'result': step_result
})
except Exception as e:
results['steps_executed'].append({
'step': step['action'],
'status': 'error',
'error': str(e)
})
results['errors'].append(str(e))
results['end_time'] = datetime.utcnow().isoformat()
results['duration'] = self.calculate_duration(results['start_time'], results['end_time'])
# Add to response history
self.response_history.append(results)
return results
async def execute_step(self, step: Dict[str, Any], threat_details: Dict[str, Any]) -> Any:
"""
Execute a single response step
"""
step_name = step['action']
if step_name == 'contain_system':
return await self.contain_system(threat_details)
elif step_name == 'collect_forensics':
return await self.collect_forensics(threat_details)
elif step_name == 'analyze_malware':
return await self.analyze_malware(threat_details)
elif step_name == 'remediate':
return await self.remediate_system(threat_details)
elif step_name == 'restore_system':
return await self.restore_system(threat_details)
elif step_name == 'activate_mitigation':
return await self.activate_ddos_mitigation(threat_details)
elif step_name == 'monitor_traffic':
return await self.monitor_network_traffic(threat_details)
elif step_name == 'adjust_rate_limits':
return await self.adjust_rate_limits(threat_details)
elif step_name == 'block_exfil_channels':
return await self.block_exfiltration_channels(threat_details)
elif step_name == 'preserve_evidence':
return await self.preserve_evidence(threat_details)
elif step_name == 'investigate_source':
return await self.investigate_source(threat_details)
elif step_name == 'notify_stakeholders':
return await self.notify_stakeholders(threat_details)
else:
raise ValueError(f'Unknown step: {step_name}')
async def contain_system(self, threat_details: Dict[str, Any]) -> str:
"""
Contain compromised system
"""
# In a real implementation, this would isolate the affected system
system_id = threat_details.get('system_id', 'unknown')
# Mock API call to EDR tool
async with aiohttp.ClientSession() as session:
async with session.post(
f"{self.security_tools['EDR']['api_endpoint']}/isolate-system",
json={'system_id': system_id}
) as response:
result = await response.json()
return f"System {system_id} isolated: {result}"
async def collect_forensics(self, threat_details: Dict[str, Any]) -> str:
"""
Collect forensics data from affected system
"""
system_id = threat_details.get('system_id', 'unknown')
# Mock forensics collection
async with aiohttp.ClientSession() as session:
async with session.post(
f"{self.security_tools['forensics_tool']['api_endpoint']}/collect",
json={'system_id': system_id, 'evidence_types': ['memory_dump', 'disk_image', 'network_logs']}
) as response:
result = await response.json()
return f"Forensics collected from {system_id}: {result}"
async def analyze_malware(self, threat_details: Dict[str, Any]) -> str:
"""
Analyze malware sample
"""
if 'malware_sample' not in threat_details:
return "No malware sample provided for analysis"
sample_hash = threat_details['malware_sample']
# Mock malware analysis
async with aiohttp.ClientSession() as session:
async with session.post(
f"{self.security_tools['malware_analyzer']['api_endpoint']}/analyze",
json={'sample_hash': sample_hash}
) as response:
result = await response.json()
return f"Malware analysis completed: {result}"
async def remediate_system(self, threat_details: Dict[str, Any]) -> str:
"""
Remediate compromised system
"""
system_id = threat_details.get('system_id', 'unknown')
# Mock remediation
async with aiohttp.ClientSession() as session:
async with session.post(
f"{self.security_tools['EDR']['api_endpoint']}/remediate",
json={'system_id': system_id, 'actions': ['remove_malware', 'reset_credentials', 'apply_patches']}
) as response:
result = await response.json()
return f"System {system_id} remediated: {result}"
async def restore_system(self, threat_details: Dict[str, Any]) -> str:
"""
Restore system to operational state
"""
system_id = threat_details.get('system_id', 'unknown')
# Mock restoration
async with aiohttp.ClientSession() as session:
async with session.post(
f"{self.security_tools['EDR']['api_endpoint']}/restore",
json={'system_id': system_id}
) as response:
result = await response.json()
return f"System {system_id} restored: {result}"
async def activate_ddos_mitigation(self, threat_details: Dict[str, Any]) -> str:
"""
Activate DDoS mitigation measures
"""
attack_details = threat_details.get('attack_details', {})
# Mock DDoS mitigation
async with aiohttp.ClientSession() as session:
async with session.post(
f"{self.security_tools['firewall']['api_endpoint']}/activate-mitigation",
json={'attack_type': attack_details.get('type'), 'target': attack_details.get('target')}
) as response:
result = await response.json()
return f"DDoS mitigation activated: {result}"
async def monitor_network_traffic(self, threat_details: Dict[str, Any]) -> str:
"""
Monitor network traffic for attack patterns
"""
# Mock network monitoring
async with aiohttp.ClientSession() as session:
async with session.post(
f"{self.security_tools['traffic_analyzer']['api_endpoint']}/start-monitoring",
json={'monitor_duration': '30m', 'focus_areas': ['bandwidth', 'connection_patterns', 'geographic_origin']}
) as response:
result = await response.json()
return f"Network monitoring started: {result}"
async def adjust_rate_limits(self, threat_details: Dict[str, Any]) -> str:
"""
Adjust rate limiting to mitigate attack
"""
# Mock rate limit adjustment
async with aiohttp.ClientSession() as session:
async with session.post(
f"{self.security_tools['rate_limiter']['api_endpoint']}/adjust-limits",
json={'new_limits': {'requests_per_minute': 100, 'concurrent_connections': 50}}
) as response:
result = await response.json()
return f"Rate limits adjusted: {result}"
async def block_exfiltration_channels(self, threat_details: Dict[str, Any]) -> str:
"""
Block data exfiltration channels
"""
exfil_channels = threat_details.get('exfil_channels', [])
# Mock blocking of exfiltration channels
async with aiohttp.ClientSession() as session:
async with session.post(
f"{self.security_tools['firewall']['api_endpoint']}/block-channels",
json={'channels': exfil_channels}
) as response:
result = await response.json()
return f"Exfiltration channels blocked: {result}"
async def preserve_evidence(self, threat_details: Dict[str, Any]) -> str:
"""
Preserve evidence of data exfiltration
"""
# Mock evidence preservation
async with aiohttp.ClientSession() as session:
async with session.post(
f"{self.security_tools['forensics_tool']['api_endpoint']}/preserve-evidence",
json={'evidence_location': threat_details.get('evidence_location', 'unknown')}
) as response:
result = await response.json()
return f"Evidence preserved: {result}"
async def investigate_source(self, threat_details: Dict[str, Any]) -> str:
"""
Investigate source of data exfiltration
"""
# Mock source investigation
async with aiohttp.ClientSession() as session:
async with session.post(
f"{self.security_tools['IDS']['api_endpoint']}/investigate-source",
json={'target_system': threat_details.get('target_system', 'unknown')}
) as response:
result = await response.json()
return f"Source investigation completed: {result}"
async def notify_stakeholders(self, threat_details: Dict[str, Any]) -> str:
"""
Notify relevant stakeholders of data exfiltration
"""
# Mock notification
stakeholders = threat_details.get('stakeholders', ['security_team'])
# In a real implementation, this would send notifications
return f"Notified stakeholders: {stakeholders}"
def calculate_duration(self, start_time: str, end_time: str) -> str:
"""
Calculate duration between two timestamps
"""
start = datetime.fromisoformat(start_time.replace('Z', '+00:00'))
end = datetime.fromisoformat(end_time.replace('Z', '+00:00'))
duration = end - start
return str(duration)
# Example usage
orchestrator = ThreatResponseOrchestrator()
# Example threat scenario
malware_threat = {
'threat_type': 'malware_detection',
'system_id': 'web-server-001',
'malware_sample': 'abc123def456ghi789',
'severity': 'high',
'detected_at': datetime.utcnow().isoformat()
}
# Execute response plan
async def run_example():
result = await orchestrator.execute_response_plan('malware_detection', malware_threat)
print(json.dumps(result, indent=2))
# Run the example
# asyncio.run(run_example())Forensics and Investigation
Automated Forensics Collection
Forensics Data Pipeline
PYTHON
# Example: Automated forensics data collection pipeline
import os
import subprocess
import tempfile
import gzip
import hashlib
from datetime import datetime
import json
import shutil
from typing import Dict, List, Any
class AutomatedForensicsPipeline:
def __init__(self, storage_path: str = "/var/forensics"):
self.storage_path = storage_path
self.tools = self.discover_forensics_tools()
self.case_id_counter = 1000
def discover_forensics_tools(self) -> Dict[str, str]:
"""
Discover available forensics tools on the system
"""
tools = {}
# Check for common forensics tools
tool_paths = {
'volatility': shutil.which('volatility'),
'sleuthkit': shutil.which('fls'),
'autopsy': shutil.which('autopsy'),
'tcpdump': shutil.which('tcpdump'),
'wireshark': shutil.which('tshark'),
'plaso': shutil.which('log2timeline.py')
}
for tool, path in tool_paths.items():
if path:
tools[tool] = path
return tools
def create_forensics_case(self, incident_id: str, description: str) -> str:
"""
Create a new forensics case directory
"""
case_id = f"FRS-{datetime.utcnow().strftime('%Y%m%d')}-{self.case_id_counter:04d}"
self.case_id_counter += 1
case_path = os.path.join(self.storage_path, case_id)
os.makedirs(case_path, exist_ok=True)
# Create case metadata
metadata = {
'case_id': case_id,
'incident_id': incident_id,
'description': description,
'created_at': datetime.utcnow().isoformat(),
'evidence_directories': {
'memory_dumps': os.path.join(case_path, 'memory_dumps'),
'disk_images': os.path.join(case_path, 'disk_images'),
'network_logs': os.path.join(case_path, 'network_logs'),
'process_logs': os.path.join(case_path, 'process_logs'),
'registry_dumps': os.path.join(case_path, 'registry_dumps'),
'timeline_data': os.path.join(case_path, 'timeline_data')
}
}
# Create evidence subdirectories
for dir_path in metadata['evidence_directories'].values():
os.makedirs(dir_path, exist_ok=True)
# Save case metadata
with open(os.path.join(case_path, 'case_metadata.json'), 'w') as f:
json.dump(metadata, f, indent=2)
return case_id
def collect_memory_dump(self, case_id: str, system_identifier: str) -> str:
"""
Collect memory dump from system
"""
case_path = os.path.join(self.storage_path, case_id)
if 'volatility' not in self.tools:
raise Exception("Volatility tool not available for memory dumps")
# Create memory dump file
dump_filename = f"memory_dump_{system_identifier}_{datetime.utcnow().strftime('%Y%m%d_%H%M%S')}.raw"
dump_path = os.path.join(case_path, 'memory_dumps', dump_filename)
# In a real implementation, this would collect the actual memory dump
# For this example, we'll create a mock dump file
with open(dump_path, 'wb') as f:
# Write mock memory dump data
mock_data = b'\x00' * (100 * 1024 * 1024) # 100MB of null bytes
f.write(mock_data)
# Calculate hash of memory dump
hash_value = self.calculate_file_hash(dump_path)
# Create analysis metadata
analysis_metadata = {
'filename': dump_filename,
'size_bytes': os.path.getsize(dump_path),
'sha256_hash': hash_value,
'collected_at': datetime.utcnow().isoformat(),
'system_identifier': system_identifier,
'analysis_completed': False
}
# Save analysis metadata
metadata_path = os.path.join(case_path, 'memory_dumps', f"{dump_filename}.metadata.json")
with open(metadata_path, 'w') as f:
json.dump(analysis_metadata, f, indent=2)
return dump_path
def collect_disk_image(self, case_id: str, volume_path: str, system_identifier: str) -> str:
"""
Collect disk image from volume
"""
case_path = os.path.join(self.storage_path, case_id)
if 'sleuthkit' not in self.tools:
raise Exception("SleuthKit not available for disk imaging")
# Create disk image file
image_filename = f"disk_image_{system_identifier}_{datetime.utcnow().strftime('%Y%m%d_%H%M%S')}.dd"
image_path = os.path.join(case_path, 'disk_images', image_filename)
# In a real implementation, this would use dd or similar to create disk image
# For this example, we'll create a mock disk image
with open(image_path, 'wb') as f:
# Write mock disk image data
mock_data = b'\x00' * (500 * 1024 * 1024) # 500MB of null bytes
f.write(mock_data)
# Calculate hash of disk image
hash_value = self.calculate_file_hash(image_path)
# Create analysis metadata
analysis_metadata = {
'filename': image_filename,
'size_bytes': os.path.getsize(image_path),
'sha256_hash': hash_value,
'collected_at': datetime.utcnow().isoformat(),
'system_identifier': system_identifier,
'source_volume': volume_path,
'analysis_completed': False
}
# Save analysis metadata
metadata_path = os.path.join(case_path, 'disk_images', f"{image_filename}.metadata.json")
with open(metadata_path, 'w') as f:
json.dump(analysis_metadata, f, indent=2)
return image_path
def collect_network_logs(self, case_id: str, time_range: tuple, system_identifier: str) -> str:
"""
Collect network logs for specified time range
"""
case_path = os.path.join(self.storage_path, case_id)
if 'tcpdump' not in self.tools:
raise Exception("Tcpdump not available for network capture")
# Create network capture file
capture_filename = f"network_capture_{system_identifier}_{datetime.utcnow().strftime('%Y%m%d_%H%M%S')}.pcap"
capture_path = os.path.join(case_path, 'network_logs', capture_filename)
# In a real implementation, this would run tcpdump or similar
# For this example, we'll create a mock capture file
with open(capture_path, 'wb') as f:
# Write mock network capture data
mock_data = b'\x00' * (50 * 1024 * 1024) # 50MB of null bytes
f.write(mock_data)
# Calculate hash of capture
hash_value = self.calculate_file_hash(capture_path)
# Create analysis metadata
analysis_metadata = {
'filename': capture_filename,
'size_bytes': os.path.getsize(capture_path),
'sha256_hash': hash_value,
'collected_at': datetime.utcnow().isoformat(),
'system_identifier': system_identifier,
'time_range': time_range,
'analysis_completed': False
}
# Save analysis metadata
metadata_path = os.path.join(case_path, 'network_logs', f"{capture_filename}.metadata.json")
with open(metadata_path, 'w') as f:
json.dump(analysis_metadata, f, indent=2)
return capture_path
def collect_process_logs(self, case_id: str, system_identifier: str) -> str:
"""
Collect process logs and information
"""
case_path = os.path.join(self.storage_path, case_id)
# Create process logs file
logs_filename = f"process_logs_{system_identifier}_{datetime.utcnow().strftime('%Y%m%d_%H%M%S')}.json"
logs_path = os.path.join(case_path, 'process_logs', logs_filename)
# In a real implementation, this would collect actual process information
# For this example, we'll create mock process data
mock_processes = [
{
'pid': 1234,
'name': 'suspicious_process.exe',
'cmdline': 'powershell -encodedcommand ...',
'user': 'SYSTEM',
'created_at': '2023-12-01T10:30:00Z',
'network_connections': [
{'local_port': 49152, 'remote_ip': '192.168.1.100', 'remote_port': 80}
]
},
{
'pid': 5678,
'name': 'legitimate_service.exe',
'cmdline': 'service start',
'user': 'SYSTEM',
'created_at': '2023-12-01T09:00:00Z',
'network_connections': []
}
]
with open(logs_path, 'w') as f:
json.dump(mock_processes, f, indent=2)
# Calculate hash of logs
hash_value = self.calculate_file_hash(logs_path)
# Create analysis metadata
analysis_metadata = {
'filename': logs_filename,
'size_bytes': os.path.getsize(logs_path),
'sha256_hash': hash_value,
'collected_at': datetime.utcnow().isoformat(),
'system_identifier': system_identifier,
'process_count': len(mock_processes),
'analysis_completed': False
}
# Save analysis metadata
metadata_path = os.path.join(case_path, 'process_logs', f"{logs_filename}.metadata.json")
with open(metadata_path, 'w') as f:
json.dump(analysis_metadata, f, indent=2)
return logs_path
def calculate_file_hash(self, filepath: str) -> str:
"""
Calculate SHA-256 hash of file
"""
sha256_hash = hashlib.sha256()
with open(filepath, "rb") as f:
# Read file in chunks to handle large files
for byte_block in iter(lambda: f.read(4096), b""):
sha256_hash.update(byte_block)
return sha256_hash.hexdigest()
def run_volatility_analysis(self, case_id: str, memory_dump_path: str) -> Dict[str, Any]:
"""
Run volatility analysis on memory dump
"""
if 'volatility' not in self.tools:
raise Exception("Volatility tool not available")
case_path = os.path.join(self.storage_path, case_id)
analysis_dir = os.path.join(case_path, 'analysis_results')
os.makedirs(analysis_dir, exist_ok=True)
# Run common volatility plugins
plugins_to_run = [
'pslist', # Process list
'netscan', # Network connections
'dlllist', # Loaded DLLs
'handles', # Open handles
'cmdline', # Process command lines
'malfind', # Malware detection
'yarascan' # Yara rule scanning
]
analysis_results = {
'memory_dump': memory_dump_path,
'analysis_started': datetime.utcnow().isoformat(),
'plugins_run': [],
'findings': []
}
for plugin in plugins_to_run:
try:
# In a real implementation, this would run the actual volatility command
# For this example, we'll simulate the output
plugin_output = self.simulate_volatility_plugin(plugin)
plugin_result = {
'plugin': plugin,
'status': 'completed',
'output_file': os.path.join(analysis_dir, f"{plugin}_output.txt"),
'findings_count': len(plugin_output) if isinstance(plugin_output, list) else 0
}
# Save plugin output
with open(plugin_result['output_file'], 'w') as f:
if isinstance(plugin_output, list):
for item in plugin_output:
f.write(f"{item}\n")
else:
f.write(str(plugin_output))
analysis_results['plugins_run'].append(plugin_result)
# Extract interesting findings
if plugin == 'malfind':
analysis_results['findings'].extend([
f"Suspicious process detected: {finding}"
for finding in plugin_output if 'suspicious' in str(finding).lower()
])
except Exception as e:
plugin_result = {
'plugin': plugin,
'status': 'error',
'error': str(e)
}
analysis_results['plugins_run'].append(plugin_result)
analysis_results['analysis_completed'] = datetime.utcnow().isoformat()
# Save overall analysis results
results_path = os.path.join(analysis_dir, 'volatility_analysis.json')
with open(results_path, 'w') as f:
json.dump(analysis_results, f, indent=2)
return analysis_results
def simulate_volatility_plugin(self, plugin: str) -> Any:
"""
Simulate volatility plugin output
"""
if plugin == 'pslist':
return [
"PID: 1234, Name: suspicious_process.exe, PPID: 567, Time: 2023-12-01 10:30:00",
"PID: 5678, Name: legitimate_service.exe, PPID: 4, Time: 2023-12-01 09:00:00"
]
elif plugin == 'netscan':
return [
"Proto: TCP, Local: 0.0.0.0:445, Remote: - , PID: 4",
"Proto: TCP, Local: 192.168.1.50:49152, Remote: 192.168.1.100:80, PID: 1234"
]
elif plugin == 'malfind':
return [
"Process: 1234, suspicious_process.exe, injected code detected",
"Process: 5678, legitimate_service.exe, clean"
]
elif plugin == 'yarascan':
return [
"Signature: SUSPICIOUS_POWERSHELL_CMD, Offset: 0x123456, Process: 1234"
]
else:
return ["Sample output for plugin: " + plugin]
def generate_timeline(self, case_id: str) -> str:
"""
Generate forensic timeline from collected evidence
"""
case_path = os.path.join(self.storage_path, case_id)
timeline_path = os.path.join(case_path, 'timeline_data', f"timeline_{datetime.utcnow().strftime('%Y%m%d_%H%M%S')}.csv")
# In a real implementation, this would combine data from all evidence sources
# For this example, we'll create a mock timeline
timeline_entries = [
"Timestamp,Event Type,Description,Source",
"2023-12-01T09:00:00Z,System Boot,System started,Boot log",
"2023-12-01T10:29:45Z,Network Connection,Outbound connection to 192.168.1.100,Net logs",
"2023-12-01T10:30:00Z,Process Creation,suspicious_process.exe started,PID 1234",
"2023-12-01T10:30:05Z,File Creation,Malicious file dropped,C:\\temp\\malware.exe",
"2023-12-01T10:30:10Z,Registry Modification,Run key modified,Registry",
"2023-12-01T10:30:15Z,Network Connection,Beacon to C&C server,Net logs"
]
with open(timeline_path, 'w') as f:
for entry in timeline_entries:
f.write(entry + "\n")
return timeline_path
# Example usage
pipeline = AutomatedForensicsPipeline("/tmp/forensics_test")
# Create a forensics case
case_id = pipeline.create_forensics_case("INC-20231201-001", "Malware infection on web server")
print(f"Created forensics case: {case_id}")
# Collect evidence
try:
memory_dump = pipeline.collect_memory_dump(case_id, "web-server-001")
print(f"Collected memory dump: {memory_dump}")
disk_image = pipeline.collect_disk_image(case_id, "/dev/sda1", "web-server-001")
print(f"Collected disk image: {disk_image}")
network_logs = pipeline.collect_network_logs(case_id, ("2023-12-01T10:00:00Z", "2023-12-01T11:00:00Z"), "web-server-001")
print(f"Collected network logs: {network_logs}")
process_logs = pipeline.collect_process_logs(case_id, "web-server-001")
print(f"Collected process logs: {process_logs}")
# Run volatility analysis
if 'volatility' in pipeline.tools:
analysis = pipeline.run_volatility_analysis(case_id, memory_dump)
print(f"Volatility analysis completed, findings: {len(analysis['findings'])}")
# Generate timeline
timeline = pipeline.generate_timeline(case_id)
print(f"Generated timeline: {timeline}")
except Exception as e:
print(f"Forensics collection failed: {str(e)}")Incident Response Automation
Automated Response Workflows
Response Workflow Engine
PYTHON
# Example: Incident response workflow engine
import asyncio
import json
from datetime import datetime
from typing import Dict, List, Any, Callable
from dataclasses import dataclass, field
@dataclass
class WorkflowStep:
name: str
action: Callable
parameters: Dict[str, Any] = field(default_factory=dict)
timeout: int = 300 # 5 minutes default timeout
retry_count: int = 3
dependencies: List[str] = field(default_factory=list)
condition: Callable = lambda: True
@dataclass
class WorkflowExecution:
workflow_id: str
incident_id: str
start_time: datetime
steps: List[WorkflowStep]
results: Dict[str, Any] = field(default_factory=dict)
status: str = "running"
error: str = None
class IncidentResponseWorkflowEngine:
def __init__(self):
self.workflows = {}
self.workflow_templates = self.load_workflow_templates()
def load_workflow_templates(self) -> Dict[str, List[WorkflowStep]]:
"""
Load predefined workflow templates
"""
return {
'malware_response': [
WorkflowStep(
name='contain_system',
action=self.contain_system_action,
parameters={'isolation_type': 'network_only'},
timeout=300,
dependencies=[]
),
WorkflowStep(
name='collect_forensics',
action=self.collect_forensics_action,
parameters={'evidence_types': ['memory', 'disk', 'network']},
timeout=1800,
dependencies=['contain_system']
),
WorkflowStep(
name='analyze_threat',
action=self.analyze_threat_action,
parameters={},
timeout=3600,
dependencies=['collect_forensics']
),
WorkflowStep(
name='remediate_threat',
action=self.remediate_threat_action,
parameters={},
timeout=1800,
dependencies=['analyze_threat']
),
WorkflowStep(
name='restore_system',
action=self.restore_system_action,
parameters={},
timeout=1800,
dependencies=['remediate_threat']
)
],
'data_breach_response': [
WorkflowStep(
name='identify_scope',
action=self.identify_breach_scope_action,
parameters={},
timeout=1800,
dependencies=[]
),
WorkflowStep(
name='preserve_evidence',
action=self.preserve_evidence_action,
parameters={},
timeout=3600,
dependencies=['identify_scope']
),
WorkflowStep(
name='notify_authorities',
action=self.notify_authorities_action,
parameters={},
timeout=300,
dependencies=['preserve_evidence']
),
WorkflowStep(
name='communicate_to_affected',
action=self.communicate_to_affected_action,
parameters={},
timeout=1800,
dependencies=['notify_authorities']
),
WorkflowStep(
name='implement_controls',
action=self.implement_controls_action,
parameters={},
timeout=3600,
dependencies=['communicate_to_affected']
)
],
'ddos_response': [
WorkflowStep(
name='activate_mitigation',
action=self.activate_mitigation_action,
parameters={'mitigation_type': 'rate_limiting'},
timeout=300,
dependencies=[]
),
WorkflowStep(
name='monitor_attacks',
action=self.monitor_attacks_action,
parameters={},
timeout=3600,
dependencies=['activate_mitigation']
),
WorkflowStep(
name='coordinate_with_isp',
action=self.coordinate_with_isp_action,
parameters={},
timeout=1800,
dependencies=['monitor_attacks']
),
WorkflowStep(
name='document_incident',
action=self.document_incident_action,
parameters={},
timeout=1800,
dependencies=['coordinate_with_isp']
)
]
}
def start_workflow(self, workflow_type: str, incident_id: str, parameters: Dict[str, Any] = None) -> str:
"""
Start a new workflow execution
"""
if workflow_type not in self.workflow_templates:
raise ValueError(f"Unknown workflow type: {workflow_type}")
workflow_id = f"WF-{datetime.utcnow().strftime('%Y%m%d-%H%M%S')}-{len(self.workflows):04d}"
# Create workflow execution
execution = WorkflowExecution(
workflow_id=workflow_id,
incident_id=incident_id,
start_time=datetime.utcnow(),
steps=self.workflow_templates[workflow_type].copy()
)
# Override parameters if provided
if parameters:
for step in execution.steps:
if step.name in parameters:
step.parameters.update(parameters[step.name])
self.workflows[workflow_id] = execution
# Start workflow asynchronously
asyncio.create_task(self.execute_workflow(execution))
return workflow_id
async def execute_workflow(self, execution: WorkflowExecution):
"""
Execute workflow steps asynchronously
"""
try:
for step in execution.steps:
# Check dependencies
if not self.check_dependencies(execution, step):
execution.error = f"Dependencies not met for step: {step.name}"
execution.status = "failed"
break
# Check condition
if not step.condition():
print(f"Condition not met for step: {step.name}, skipping")
execution.results[step.name] = {'status': 'skipped', 'reason': 'condition_not_met'}
continue
# Execute step
result = await self.execute_step_with_retry(step, execution.incident_id)
execution.results[step.name] = result
if result['status'] != 'success':
execution.error = f"Step failed: {step.name}"
execution.status = "failed"
break
if execution.status != "failed":
execution.status = "completed"
except Exception as e:
execution.error = str(e)
execution.status = "failed"
execution.results['workflow_complete'] = {
'status': execution.status,
'completed_at': datetime.utcnow().isoformat(),
'error': execution.error
}
def check_dependencies(self, execution: WorkflowExecution, step: WorkflowStep) -> bool:
"""
Check if step dependencies are satisfied
"""
for dep in step.dependencies:
if dep not in execution.results:
return False
if execution.results[dep].get('status') != 'success':
return False
return True
async def execute_step_with_retry(self, step: WorkflowStep, incident_id: str) -> Dict[str, Any]:
"""
Execute a step with retry logic
"""
for attempt in range(step.retry_count):
try:
# Execute the action
result = await step.action(incident_id, **step.parameters)
return {
'status': 'success',
'result': result,
'attempt': attempt + 1,
'executed_at': datetime.utcnow().isoformat()
}
except Exception as e:
if attempt == step.retry_count - 1:
# Last attempt failed
return {
'status': 'failed',
'error': str(e),
'attempt': attempt + 1,
'executed_at': datetime.utcnow().isoformat()
}
# Wait before retry
await asyncio.sleep(2 ** attempt) # Exponential backoff
# Action implementations
async def contain_system_action(self, incident_id: str, isolation_type: str = 'network_only') -> Dict[str, Any]:
"""
Contain the affected system
"""
# Simulate system containment
await asyncio.sleep(2) # Simulate API call delay
return {
'action': 'contain_system',
'isolation_type': isolation_type,
'systems_affected': ['web-server-001'],
'isolation_status': 'complete'
}
async def collect_forensics_action(self, incident_id: str, evidence_types: List[str]) -> Dict[str, Any]:
"""
Collect forensic evidence
"""
# Simulate forensics collection
await asyncio.sleep(5) # Simulate collection time
return {
'action': 'collect_forensics',
'evidence_types_collected': evidence_types,
'evidence_locations': ['/forensics/evidence.zip'],
'collection_status': 'complete'
}
async def analyze_threat_action(self, incident_id: str) -> Dict[str, Any]:
"""
Analyze the collected threat
"""
# Simulate threat analysis
await asyncio.sleep(3) # Simulate analysis time
return {
'action': 'analyze_threat',
'threat_type': 'malware',
'malware_family': 'trojan.generic',
'indicators_of_compromise': ['192.168.1.100', 'suspicious.exe'],
'analysis_status': 'complete'
}
async def remediate_threat_action(self, incident_id: str) -> Dict[str, Any]:
"""
Remediate the threat
"""
# Simulate threat remediation
await asyncio.sleep(4) # Simulate remediation time
return {
'action': 'remediate_threat',
'remediation_actions': ['quarantine_file', 'terminate_process', 'reset_passwords'],
'remediation_status': 'complete'
}
async def restore_system_action(self, incident_id: str) -> Dict[str, Any]:
"""
Restore the system to normal operation
"""
# Simulate system restoration
await asyncio.sleep(3) # Simulate restoration time
return {
'action': 'restore_system',
'restoration_actions': ['remove_quarantine', 'verify_integrity', 'monitor_for_recurrence'],
'