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Windows event log ยท Security4797 An attempt was made to query the existence of a blank password for an account

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

Fields EvtxECmd extracts

4 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%
    • %TargetUserName% = /Event/EventData/Data[@Name="TargetUserName"]
    • %TargetDomainName% = /Event/EventData/Data[@Name="TargetDomainName"]
  • PayloadData2SubjectLogonId: %SubjectLogonId%
    • %SubjectLogonId% = /Event/EventData/Data[@Name="SubjectLogonId"]
  • PayloadData3Workstation: %Workstation%
    • %Workstation% = /Event/EventData/Data[@Name="Workstation"]

Sample event

Event XML from the map file

<Event>
  <System>
    <Provider Name="Microsoft-Windows-Security-Auditing" Guid="54849625-5478-4994-a5ba-3e3b6798c30d"/>
    <EventID>4797</EventID>
    <Version>0</Version>
    <Level>0</Level>
    <Task>13824</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8020000000000000</Keywords>
    <TimeCreated SystemTime="2021-07-21 08:38:40.5035194"/>
    <EventRecordID>2882305</EventRecordID>
    <Correlation ActivityID="f5b29056-746c-0000-9990-b2f56c74d701"/>
    <Execution ProcessID="656" ThreadID="15220"/>
    <Channel>Security</Channel>
    <Computer>HOSTNAME.domain</Computer>
    <Security/>
  </System>
  <EventData>
    <Data Name="SubjectUserSid">S-1-5-21-12345678-12345678-112345678-1234</Data>
    <Data Name="SubjectUserName">Username</Data>
    <Data Name="SubjectDomainName">Domain</Data>
    <Data Name="SubjectLogonId">0x32012CAF</Data>
    <Data Name="Workstation">HOSTNAME</Data>
    <Data Name="TargetUserName">Username</Data>
    <Data Name="TargetDomainName">Domain</Data>
  </EventData>
</Event>

References

3 links

Source: evtx/Maps/Security_Microsoft-Windows-Security-Auditing_4797.map(opens in new tab) by Andrew Rathbun and contributors(opens in new tab), MIT License(opens in new tab)