Windows Security Log Event ID 4731

Operating Systems Windows 2008 R2 and 7
Windows 2012 R2 and 8.1
Windows 2016 and 10
Category
 • Subcategory
Account Management
 • Security Group Management
Type Success
Corresponding events
in Windows 2003
and before
635  
Discussions on Event ID 4731
Ask a question about this event

4731: A security-enabled local group was created

On this page

The user in Subject: created a Security Local group identified in New Group.

This event is logged on domain controllers for Active Directory domain local groups and member computer for local SAM groups.  You can determine if the group is a domain or SAM group by comparing Group Domain: to the Computer: name.  If they match you have a SAM group, if they differ you have a domain group.

Active Directory

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.

A domain local group means the group can only be granted access to objects within its domain but can have members from any trusted domain.

Local SAM

All groups are security groups in the computer's SAM.  Local SAM groups can be granted access to objects on the local computer only but may have members from the local SAM and any trusted domain.

Free Security Log Resources by Randy

Description Fields in 4731

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.

New Group:

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

Attributes:

  • SAM Account Name: Pre-win2k name of affected group
  • SID History:  used when migrating legacy NT domains or merging domains

Additional Information:

  • Privileges:  always "-"

Setup PowerShell Audit Log Forwarding in 4 Minutes

 

Examples of 4731

A security-enabled local group was created.

Subject:

   Security ID:  WIN-R9H529RIO4Y\Administrator
   Account Name:  Administrator
   Account Domain:  WIN-R9H529RIO4Y
   Logon ID:  0x1fd23

New Group:

   Security ID:  S-1-5-21-3108364787-189202583-342365621-1001
   Group Name:  SalesReps
   Group Domain:  WIN-R9H529RIO4Y

Attributes:

   SAM Account Name: SalesReps
   SID History:  -

Additional Information:

   Privileges:  -

Keep me up-to-date on the Windows Security Log.
Email*:
*We will NOT share this

Top 10 Windows Security Events to Monitor

Free Tool for Windows Event Collection



 

Additional Resources