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

ATT&CK techniques

Persistence → Priv Esc

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1098Account Manipulation
Priv Esc
- T1098Account Manipulation
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
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

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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)

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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

v2
Candidate ingested via manual entry.2026-07-31
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.

windows-security-member-removed-from-a-security-enabled-global-group-02c39d30

title: "Windows Security Log: Member Removed from Security-Enabled Global Group"
id: 7a3dffbb-31a2-4f3f-8bca-beb8892ad30b
related:
  - id: 9cf01b6c-e723-4841-a868-6d7f8245ca6e
    type: obsolete
  - id: 02c39d30-02b5-45d2-b435-8aebfe5a8629
    type: derived
status: stable
description: 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.
references:
  - https://www.cisecurity.org/controls/cis-controls-list/
  - https://www.pcisecuritystandards.org/documents/PCI_DSS_v3-2-1.pdf
  - https://nvlpubs.nist.gov/nistpubs/CSWP/NIST.CSWP.04162018.pdf
  - https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventID=4729
  - https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventID=633
  - https://github.com/SigmaHQ/sigma/blob/master/rules/windows/builtin/security/account_management/win_security_member_removed_security_enabled_global_group.yml
author: Alexandr Yampolskyi, SOC Prime, Huntrule Team
date: 2023-04-26
tags:
  - attack.privilege-escalation
  - attack.persistence
  - attack.t1098
logsource:
  product: windows
  service: security
detection:
  selection:
    EventID:
      - 633
      - 4729
  condition: selection
falsepositives:
  - Unknown
level: low
license: DRL-1.1

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