4729 Security log · Account Management medium severity low volume

Windows Event ID 4729 — A member was removed from a security-enabled global group

User removed from a global security group.

Why event 4729 matters

Removing members from Protected Users or Domain Admins to degrade security posture. Also cleanup after attacker added themselves.

How to detect it

Alert: removal from Protected Users, Domain Admins, Enterprise Admins. Correlate add-then-remove pattern with 4728.

Log source
Security
Advanced Audit Policy — enable the 'Account Management' subcategory (Success and/or Failure).
Fields to pivot on
SubjectUserNameTargetUserNameLogonTypeIpAddressWorkstationName

MITRE ATT&CK mapping

Tactic Technique
Impact Account Access Removal (T1531)

Detection queries

Starting points — adapt the log source, projected fields and thresholds for your environment.

Sentinel / Defender KQL
SecurityEvent
| where EventID == 4729   // A member was removed from a security-enabled global group
| project TimeGenerated, Computer, SubjectUserName, TargetUserName, LogonType, IpAddress, WorkstationName
| sort by TimeGenerated desc
Splunk SPL
index=* sourcetype="WinEventLog:Security" EventCode=4729
| stats count earliest(_time) as first_seen latest(_time) as last_seen by ComputerName
| sort - count   `# A member was removed from a security-enabled global group — add EventData fields: SubjectUserName, TargetUserName, LogonType, IpAddress`
Hunt event 4729 in Sentinel/Defender →
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Related Account Management events

4720 A user account was created 4722 A user account was enabled 4723 An attempt was made to change an account's password 4724 An attempt was made to reset an account's password 4725 A user account was disabled 4726 A user account was deleted 4728 A member was added to a security-enabled global group 4730 A security-enabled global group was deleted 4731 A security-enabled local group was created 4732 A member was added to a security-enabled local group 4733 A member was removed from a security-enabled local group 4734 A security-enabled local group was deleted

Frequently asked questions

What is Windows Event ID 4729?

A member was removed from a security-enabled global group. User removed from a global security group.

Which log records event 4729?

Event 4729 is written to the Security channel by Microsoft-Windows-Security-Auditing. Advanced Audit Policy — enable the 'Account Management' subcategory (Success and/or Failure).

What MITRE ATT&CK techniques map to event 4729?

Event 4729 is associated with: Account Access Removal (T1531).

How do you detect activity around event 4729?

Alert: removal from Protected Users, Domain Admins, Enterprise Admins. Correlate add-then-remove pattern with 4728.