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Windows event log ยท Security4799 A security-enabled local group membership was enumerated

  • Security
  • 5 fields
  • Security.evtx
  • Microsoft-Windows-Security-Auditing

Fields EvtxECmd extracts

5 columns in the EvtxECmd CSV

  • UserName%domain%\%user% (%sid%)
    • %domain% = /Event/EventData/Data[@Name="SubjectDomainName"]
    • %user% = /Event/EventData/Data[@Name="SubjectUserName"]
    • %sid% = /Event/EventData/Data[@Name="SubjectUserSid"]
  • PayloadData1Target: %TargetDomainName%\%TargetUserName% (%TargetSid%)
    • %TargetUserName% = /Event/EventData/Data[@Name="TargetUserName"]
    • %TargetDomainName% = /Event/EventData/Data[@Name="TargetDomainName"]
    • %TargetSid% = /Event/EventData/Data[@Name="TargetSid"]
  • PayloadData2SubjectLogonId: %SubjectLogonId%
    • %SubjectLogonId% = /Event/EventData/Data[@Name="SubjectLogonId"]
  • PayloadData3CallerProcessName: %CallerProcessName%
    • %CallerProcessName% = /Event/EventData/Data[@Name="CallerProcessName"]
  • PayloadData4CallerProcessId: %CallerProcessId%
    • %CallerProcessId% = /Event/EventData/Data[@Name="CallerProcessId"]

Sample event

Event XML from the map file

<Event>
  <System>
    <Provider Name="Microsoft-Windows-Security-Auditing" Guid="54849625-5478-4994-a5ba-3e3b0328c30d"/>
    <EventID>4799</EventID>
    <Version>0</Version>
    <Level>0</Level>
    <Task>13845</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000300000000000</Keywords>
    <TimeCreated SystemTime="2020-10-14 06:47:41.5065296"/>
    <EventRecordID>245996201</EventRecordID>
    <Correlation ActivityID="b33389da-a120-0030-ad89-30b340a1d601"/>
    <Execution ProcessID="768" ThreadID="18352"/>
    <Channel>Security</Channel>
    <Computer>HOSTNAME.domain.com</Computer>
    <Security/>
  </System>
  <EventData>
    <Data Name="TargetUserName">Administrators</Data>
    <Data Name="TargetDomainName">Builtin</Data>
    <Data Name="TargetSid">S-1-5-32-123</Data>
    <Data Name="SubjectUserSid">S-1-5-18</Data>
    <Data Name="SubjectUserName">ANONYMOUSUSER</Data>
    <Data Name="SubjectDomainName">DOMAIN</Data>
    <Data Name="SubjectLogonId">0x3F3</Data>
    <Data Name="CallerProcessId">0x123</Data>
    <Data Name="CallerProcessName">C:\Windows\System32\svchost.exe</Data>
  </EventData>
</Event>

References

3 links

Source: evtx/Maps/Security_Microsoft-Windows-Security-Auditing_4799.map(opens in new tab) by Andrew Rathbun and contributors(opens in new tab), MIT License(opens in new tab)