EDR Incident Response and Remediation Workflows

Step-by-step response flows using EDR.

Alert Triage

Initial Assessment

• Alert severity classification

• False positive elimination

• Impact assessment

• Resource prioritization

• Escalation criteria

Triage Questions

• Is this a known false positive?

• Are multiple endpoints affected?

• Is sensitive data at risk?

• Are critical systems involved?

• Is lateral movement detected?

Priority Matrix

• Critical: Active breach, data exfiltration

• High: Malware execution, privilege escalation

• Medium: Suspicious behavior, policy violations

• Low: Informational alerts, minor anomalies

Investigation Checklist

Endpoint Analysis

• Process execution timeline

• Network connection history

• File system modifications

• Registry changes

• User activity correlation

Forensic Data Collection

• Memory dumps

• Disk images

• Network packet captures

• Log file extraction

• Configuration snapshots

Threat Intelligence

• IOC matching

• Malware family identification

• Campaign attribution

• TTP analysis

• Geographic correlation

Scope Determination

• Additional affected systems

• Lateral movement indicators

• Privilege escalation evidence

• Data access patterns

• Timeline reconstruction

Containment Actions

Immediate Containment

• Network isolation

• Process termination

• User account suspension

• System shutdown (if necessary)

• Remote access blocking

Gradual Containment

• Firewall rule implementation

• DNS blocking

• Application restrictions

• Network segmentation

• Monitoring enhancement

Communication Protocols

• Stakeholder notification

• Management briefings

• Customer communications

• Regulatory reporting

• Media response planning

Eradication and Recovery

Malware Removal

• Endpoint agent cleanup

• Registry key deletion

• File quarantine/deletion

• Service removal

• Scheduled task cleanup

Vulnerability Remediation

• Patch deployment

• Configuration hardening

• Access control updates

• Password resets

• Certificate renewal

System Restoration

• Backup validation

• Data integrity checks

• Service restoration

• Network connectivity

• Application functionality

Validation Testing

• Malware scanning

• Vulnerability assessments

• Penetration testing

• Configuration auditing

• User access verification

Evidence Handling and Chain-of-Custody

Evidence Collection

• Forensic imaging procedures

• Hash verification

• Metadata preservation

• Access logging

• Storage protocols

Chain-of-Custody

• Evidence tagging

• Transfer documentation

• Access control

• Storage security

• Disposal procedures

Legal Considerations

• Attorney consultation

• Privilege protection

• Discovery obligations

• Retention requirements

• Export controls

Documentation Standards

• Investigation notes

• Timeline creation

• Evidence cataloging

• Analysis reports

• Final summaries

Post-Incident Review and Metrics

Lessons Learned

• Response effectiveness

• Detection gaps

• Process improvements

• Tool limitations

• Training needs

Metrics Collection

• Detection time

• Response time

• Containment time

• Recovery time

• Total incident duration

Root Cause Analysis

• Initial attack vector

• Vulnerability exploitation

• Control failures

• Detection delays

• Response gaps

Remediation Tracking

• Corrective actions

• Implementation timeline

• Effectiveness validation

• Risk reduction

• Compliance updates

Process Improvements

• Playbook updates

• Tool enhancements

• Training programs

• Communication protocols

• Escalation procedures