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Windows event log ยท Security4657 A registry value was modified

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

Fields EvtxECmd extracts

8 columns in the EvtxECmd CSV

  • UserName%domain%\%user%
    • %domain% = /Event/EventData/Data[@Name="SubjectDomainName"]
    • %user% = /Event/EventData/Data[@Name="SubjectUserName"]
  • ExecutableInfo%Process% (PID: %ProcessId%)
    • %Process% = /Event/EventData/Data[@Name="ProcessName"]
    • %ProcessId% = /Event/EventData/Data[@Name="ProcessId"]
  • PayloadData1Logon ID: %SubjectLogonId%
    • %SubjectLogonId% = /Event/EventData/Data[@Name="SubjectLogonId"]
  • PayloadData2Operation Type: %OperationType%
    • %OperationType% = /Event/EventData/Data[@Name="OperationType"]
  • PayloadData3Registry Key: %ObjectName%
    • %ObjectName% = /Event/EventData/Data[@Name="ObjectName"]
  • PayloadData4Value Name: %ObjectValueName%
    • %ObjectValueName% = /Event/EventData/Data[@Name="ObjectValueName"]
  • PayloadData5Old type \ value: %OldValueType% \ %OldValue%
    • %OldValueType% = /Event/EventData/Data[@Name="OldValueType"]
    • %OldValue% = /Event/EventData/Data[@Name="OldValue"]
  • PayloadData6New type \ value: %NewValueType% \ %NewValue%
    • %NewValueType% = /Event/EventData/Data[@Name="NewValueType"]
    • %NewValue% = /Event/EventData/Data[@Name="NewValue"]

Sample event

Event XML from the map file

<Event>
  <System>
    <Provider Name="Microsoft-Windows-Security-Auditing" Guid="{54849625-5478-4994-a5ba-3e3b0328c30d}"/>
    <EventID>4657</EventID>
    <Version>0</Version>
    <Level>0</Level>
    <Task>12801</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8020000000000000</Keywords>
    <TimeCreated SystemTime="2019-09-23T02:13:15.307834500Z"/>
    <EventRecordID>24338565</EventRecordID>
    <Correlation/>
    <Execution ProcessID="4" ThreadID="12406"/>
    <Channel>Security</Channel>
    <Computer>Thunder.cloud.corp.com</Computer>
    <Security/>
  </System>
  <EventData>
    <Data Name="SubjectUserSid">S-1-5-18</Data>
    <Data Name="SubjectUserName">THUNDER$</Data>
    <Data Name="SubjectDomainName">CLOUD</Data>
    <Data Name="SubjectLogonId">0x3e7</Data>
    <Data Name="ObjectName">\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\Audit</Data>
    <Data Name="ObjectValueName">ProcessCreationIncludeCmdLine_Enabled</Data>
    <Data Name="HandleId">0x314</Data>
    <Data Name="OperationType">%%1904</Data>
    <Data Name="OldValueType">-</Data>
    <Data Name="OldValue">-</Data>
    <Data Name="NewValueType">%%1876</Data>
    <Data Name="NewValue">1</Data>
    <Data Name="ProcessId">0x3788</Data>
    <Data Name="ProcessName">C:\Windows\System32\svchost.exe</Data>
  </EventData>
</Event>

References

3 links

Source: evtx/Maps/Security_Microsoft-Windows-Security-Auditing_4657.map(opens in new tab) by Troy Larson and contributors(opens in new tab), MIT License(opens in new tab)