OCSP Responder Auditing Settings Changed or Disabled (via security)
- Product
- windows
- Service
- security
- Author
- HuntRule
- Published
- 2026-05-21
- Updated
- 2026-08-28
ATT&CK techniques
Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects would attempt to alter or disable OCSP responder auditing settings to evade detection and perform further escalation via ADCS vulnerabilities.
Reporting behind it
- attack.mitre.orghttps://attack.mitre.org/techniques/T1562/002/
- gradenegger.euhttps://www.gradenegger.eu/en/overview-of-the-audit-events-generated-by-the-online-responder-ocsp/
- services.google.comhttps://services.google.com/fh/files/misc/active-directory-certificate-services-hardening-wp-en.pdf
- speakerdeck.comhttps://speakerdeck.com/heirhabarov/hunting-for-active-directory-certificate-services-abuse
- crowdstrike.comhttps://www.crowdstrike.com/wp-content/uploads/2023/12/investigating-active-directory-certificate-abuse.pdf
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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