Agent Skills: detecting-golden-ticket-attacks

Instructions

1. Install dependencies: pip install python-evtx lxml
2. Collect Windows Security EVTX logs from domain controllers.
3. Parse Event IDs:
   • 4768: Kerberos TGT requests (authentication service requests)
   • 4624: Logon events (look for LogonType 3 with NTLM or Kerberos)
   • 4672: Special privileges assigned (admin logon indicators)
4. Detect golden ticket indicators:
   • TGT with lifetime >10 hours (default max is 10h)
   • Event 4672 for accounts not in Domain Admins
   • Logon events with no corresponding 4768 TGT request
   • Domain SID inconsistencies in ticket data
5. Generate detection report with timeline reconstruction.

python scripts/agent.py --evtx-file /path/to/Security.evtx --output golden_ticket_report.json

Examples

Detect Anomalous Privilege Assignment

Event 4672 for a standard user account receiving SeDebugPrivilege, SeTcbPrivilege, or SeBackupPrivilege indicates potential golden ticket usage.

TGT Without Corresponding AS-REQ

A logon event (4624) with Kerberos authentication but no matching 4768 (TGT request) on the DC suggests a forged TGT.