huntrule

Windows Security: Security-Enabled Global Group Deletion (Event ID 4730/634)

Alerts on Windows Security audit events indicating a security-enabled global group was deleted.

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 flags Windows Security log events indicating a security-enabled global group was deleted (Event ID 4730 and 634). Attackers may delete groups to disrupt access controls or remove persistence and auditing context tied to group memberships. The detection relies on Windows Security auditing telemetry from the event records for these specific deletion events.

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: Security-Enabled Global Group Deletion (Event ID 4730/634)
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.