Individual skill

detecting-golden-ticket-forgery

Detect Kerberos Golden Ticket forgery (e.g. Mimikatz-forged tickets) by analyzing Windows Event ID 4769 for RC4 encryption downgrades (0x17), abnormal ticket lifetimes, and krbtgt account anomalies using Splunk and Elastic SIEM queries. Use when investigating suspected forged Kerberos tickets or krbtgt credential theft in Active Directory.

skills/detecting-golden-ticket-forgery/SKILL.md

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Scanner rules are current: Yes
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Skill scan complete: Yes
Observed behavior: Local scripts
Last checked: Nov 9, 2026

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Repository context

Repository stars (not skill ratings): 35,862
Repository last updated: Aug 31, 2026
License: Apache-2.0

Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.

ai-agents Repository topic
claude-code Repository topic
cybersecurity Repository topic
incident-response Repository topic
mitre-attack Repository topic
penetration-testing Repository topic
red-team Repository topic
security Repository topic
cloud-security Repository topic
malware-analysis Repository topic
golden-ticket Declared skill tag
kerberos Declared skill tag
active-directory Declared skill tag
mimikatz Declared skill tag
splunk Declared skill tag
credential-theft Declared skill tag
windows-security Declared skill tag
security Derived category

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SKILL.mdcore · 2,705 bytes
references/api-reference.mddoc · 2,344 bytes
scripts/agent.pyruns · 8,454 bytes

Read excerpt


# Detecting Golden Ticket Forgery

## Overview

A Golden Ticket attack (MITRE ATT&CK T1558.001) involves forging a Kerberos Ticket Granting Ticket (TGT) using the krbtgt account NTLM hash, granting unrestricted access to any service in the Active Directory domain. This skill detects Golden Ticket usage by analyzing Event ID 4769 for RC4 encryption type (0x17) in environments enforcing AES, identifying tickets with abnormal lifetimes exceeding domain policy, correlating TGS requests with missing corresponding TGT requests (Event ID 4768), and detecting krbtgt password age anomalies.


## When to Use

- When investigating security incidents that require detecting golden ticket forgery
- When building detection rules or threat hunting queries for this domain
- When SOC analysts need structured procedures for this analysis type
- When validating security monitoring coverage for related attack techniques