EDR Integration with SIEM and SOAR Platforms

Patterns and best practices for integrating EDR with SIEM and SOAR.

Event Schemas and Field Mapping

Standardized Data Fields

• Timestamp normalization (UTC format)

• Source IP and destination IP mapping

• Process ID and parent process tracking

• User context and session information

• File hash values (MD5, SHA1, SHA256)

Common Event Classification

• Authentication events

• Process execution events

• Network connection events

• File system events

• Registry modification events

Field Normalization Standards

• OSSEC/Wazuh field mapping

• MITRE ATT&CK framework alignment

• Sigma rule compatibility

• STIX/TAXII data exchange

Parsing and Normalization

Log Format Handling

• JSON parsing for API data

• CEF format standardization

• Syslog RFC compliance

• Custom regex patterns

• XML to JSON conversion

Data Enrichment Pipeline

• GeoIP location mapping

• Domain reputation scoring

• Asset inventory correlation

• User directory integration

• Vulnerability database matching

Quality Assurance

• Data validation rules

• Missing field detection

• Format consistency checks

• Duplicate event filtering

• Timestamp drift correction

Correlation Rules

Time-Based Correlation

• Event sequence analysis

• Sliding window detection

• Rate-based thresholds

• Temporal pattern matching

• Baseline deviation alerts

Cross-Source Correlation

• EDR + firewall logs

• EDR + authentication logs

• EDR + vulnerability scanners

• EDR + threat intelligence feeds

• EDR + email security

Statistical Correlation

• Anomaly detection algorithms

• Machine learning models

• Behavioral baselines

• Outlier identification

• Risk scoring mechanisms

Enrichment with Threat Intelligence

IOC Matching

• Hash-based lookups

• Domain reputation checks

• IP address categorization

• File signature analysis

• Certificate validation

Threat Actor Attribution

• TTPs mapping

• Campaign tracking

• Infrastructure correlation

• Timeline analysis

• Geographic clustering

Contextual Intelligence

• CVE vulnerability data

• Exploit kit signatures

• Malware family classification

• Attack chain reconstruction

• Industry-specific threats

SOAR Playbook Triggers and Actions

Automated Triggers

• High-severity alert generation

• Multiple IOC matches

• Privilege escalation detection

• Lateral movement indicators

• Data exfiltration patterns

Response Actions

• Endpoint isolation

• User account suspension

• Process termination

• File quarantine

• Network blocking

Investigation Workflows

• Evidence collection

• Timeline reconstruction

• Impact assessment

• Root cause analysis

• Attribution research

Notification and Escalation

• Analyst alerting

• Management reporting

• Customer notifications

• Regulatory compliance

• Third-party integration

Common Pitfalls and Reliability Tuning

Data Quality Issues

• Incomplete log forwarding

• Timestamp synchronization problems

• Character encoding errors

• Truncated event data

• Missing contextual information

Performance Bottlenecks

• High-volume event processing

• Complex correlation rules

• Real-time analysis requirements

• Storage capacity planning

• Network bandwidth limitations

False Positive Management

• Baseline tuning periods

• Environment-specific whitelisting

• Business process exceptions

• Seasonal behavior adjustments

• User feedback integration

Integration Challenges

• API rate limiting

• Authentication token management

• Version compatibility issues

• Vendor-specific formats

• Legacy system constraints

Reliability Best Practices

• Redundant data paths

• Failover mechanisms

• Health monitoring

• Performance metrics

• Regular testing procedures

Tuning Recommendations

• Gradual rule deployment

• A/B testing for changes

• Feedback loop implementation

• Continuous improvement process

• Documentation maintenance