Windows Security Log Event ID 4729

4729: A member was removed from a security-enabled global group

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The user in Subject: removed the user/group/computer in Member: from the Security Global group in Group:.

In Active Directory Users and Computers "Security Enabled" groups are simply referred to as Security groups. AD has 2 types of groups: Security and Distribution. Distribution (security disabled) groups are for distribution lists in Exchange and cannot be assigned permissions or rights. Security (security enabled) groups can be used for permissions, rights and as distribution lists.

Global means the group can be granted access in any trusting domain but may only have members from its own domain. 

This event is only logged on domain controllers.

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Description Fields in 4729

Subject:

The user and logon session that performed the action.

• Security ID:  The SID of the account.
• Account Name: The account logon name.
• Account Domain: The domain or - in the case of local accounts - computer name.
• Logon ID is a semi-unique (unique between reboots) number that identifies the logon session.  Logon ID allows you to correlate backwards to the logon event (4624) as well as with other events logged during the same logon session.

Member:

• Security ID:  The SID of the group's member
• Account Name:  The distinguished name of the group's member

Group:

• Security ID:  The SID of the affected group
• Group Name: Name of affected group
• Group Domain:  Domain of affected group

Additional Information:

• Privileges:  always "-"

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Mini-Seminars Covering Event ID 4729 Monitoring Active Directory for Security and Compliance: How Far Does the Native Audit Log Take You? Building a Security Dashboard for Your Senior Executives Detecting Compromised Privileged Accounts with the Security Log Real Methods for Detecting True Advanced Persistent Threats Using Logs Monitoring Group Membership Changes in Active Directory Tracking Group Membership Changes in Active Directory Auditing Active Directory Changes with the Windows Security Log Security Log Deep Dive: Mapping Active Directory Authentication and Account Management Events to MITRE ATT&CK TTPs

 

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