huntrule

Windows Security Log: Member Removed from Security-Enabled Global Group

Flags Windows Security Log events showing a member was removed from a security-enabled global group.

FreeReviewedSigma · Low · v2
Product
windows
Service
security
Author
Alexandr Yampolskyi, SOC Prime (SigmaHQ), DRL 1.1
Published
2023-04-26
Updated
2026-07-31
AnalysisDetection

ATT&CK techniques

Persistence → Priv Esc

  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

  14. Impact

What it detects

This rule identifies when a member is removed from a security-enabled global group using Windows Security Log events. Attackers may use group membership changes to remove access or reduce visibility by altering privileges tied to global groups. The detection relies on matching EventID 633 and 4729 records in the Windows Security log.

Reporting behind it

Related detections9 linkedT1098 — drag to rearrange
Malicious Cluster-Admin Role Binding Creation (via audit)
Malicious User Password Change Using Current Hash Password - ChangeNTLM - Mimikatz (via security)
Suspicious Account Password Set to Never Expire. (via security)
Malicious Modification of a Computer Account SPN (via security)
Suspicious Massive Group Membership Changes (via security)
Malicious High Risk Active Directory Group Membership Change (via security)
Malicious Account Marked as Sensitive and Cannot Be Delegated Had Its Protection Removed (via security)
Malicious Host Constrained Delegation Settings Changed for Potential Abuse (Rubeus) - Kerberos Only (via security)
Malicious Host Set with Unconstrained Delegation (via security)
Windows Security Log: Member Removed from Security-Enabled Global Group
Pivot detection · T1098 · 9 related

Changelog

v2
  1. v2
    Candidate ingested via manual entry.2026-07-31
  2. v1
    No changelog recorded for this version.2026-07-30

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.