Detecting DCSync Attack in Active Directory

When to Use

• When hunting for credential theft in Active Directory environments
• After compromise of accounts with Replicating Directory Changes permissions
• When investigating suspected use of Mimikatz or Impacket secretsdump
• During incident response involving lateral movement with domain admin credentials
• When auditing AD replication permissions as part of security hardening

Prerequisites

• Windows Security Event Logs with Event ID 4662 (Object Access) enabled
• Advanced Audit Policy: Audit Directory Service Access enabled
• Domain Controller event forwarding to SIEM
• Knowledge of legitimate domain controller hostnames and IPs
• Directory Service Access auditing with SACL on domain object

Workflow