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Windows event log ยท Security4656 A handle to an object was requested

  • 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%ProcessName% (PID: %ProcessId%)
    • %ProcessName% = /Event/EventData/Data[@Name="ProcessName"]
    • %ProcessId% = /Event/EventData/Data[@Name="ProcessId"]
  • PayloadData1ObjectType: %ObjectType%
    • %ObjectType% = /Event/EventData/Data[@Name="ObjectType"]
  • PayloadData2ObjectName: %ObjectName%
    • %ObjectName% = /Event/EventData/Data[@Name="ObjectName"]
  • PayloadData3HandleId: %HandleId%
    • %HandleId% = /Event/EventData/Data[@Name="HandleId"]
  • PayloadData4TransactionId: %TransactionId%
    • %TransactionId% = /Event/EventData/Data[@Name="TransactionId"]
  • PayloadData5AccessList: %AccessList%
    • %AccessList% = /Event/EventData/Data[@Name="AccessList"]
  • PayloadData6PrivilegeList: %PrivilegeList%
    • %PrivilegeList% = /Event/EventData/Data[@Name="PrivilegeList"]

Value lookups

Codes that EvtxECmd turns into text

AccessList

%%4416
ReadData (or ListDirectory)
%%4417
WriteData (or AddFile)
%%4418
AppendData (or AddSubdirectory or CreatePipeInstance)
%%4419
ReadEA (or Enumerate SubKeys)
%%4420
WriteEA
%%4421
Execute/Traverse
%%4422
DeleteChild
%%4423
ReadAttributes
%%4424
WriteAttributes
%%1537
DELETE
%%1538
READ_CONTROL
%%1539
WRITE_DAC
%%1540
WRITE_OWNER
%%1541
SYNCHRONIZE
%%1542
ACCESS_SYS_SEC

Sample event

Event XML from the map file

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Security-Auditing" Guid="{54849625-5478-4994-A5BA-3E3B0328C30D}"/>
    <EventID>4656</EventID>
    <Version>1</Version>
    <Level>0</Level>
    <Task>12800</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8010000000000000</Keywords>
    <TimeCreated SystemTime="2015-09-18T22:15:19.346776600Z"/>
    <EventRecordID>274057</EventRecordID>
    <Correlation/>
    <Execution ProcessID="516" ThreadID="524"/>
    <Channel>Security</Channel>
    <Computer>DC01.contoso.local</Computer>
    <Security/>
  </System>
  <EventData>
    <Data Name="SubjectUserSid">S-1-5-21-3457937927-2839227994-823803824-1104</Data>
    <Data Name="SubjectUserName">dadmin</Data>
    <Data Name="SubjectDomainName">CONTOSO</Data>
    <Data Name="SubjectLogonId">0x4367b</Data>
    <Data Name="ObjectServer">Security</Data>
    <Data Name="ObjectType">File</Data>
    <Data Name="ObjectName">C:\\Documents\\HBI Data.txt</Data>
    <Data Name="HandleId">0x0</Data>
    <Data Name="TransactionId">{00000000-0000-0000-0000-000000000000}</Data>
    <Data Name="AccessList">%%1538 %%1541 %%4416 %%4417 %%4418 %%4419 %%4420 %%4423 %%4424</Data>
    <Data Name="AccessReason">%%1538: %%1804 %%1541: %%1809 %%4416: %%1809 %%4417: %%1809 %%4418: %%1802 D:(D;;LC;;;S-1-5-21-3457937927-2839227994-823803824-1104) %%4419: %%1809 %%4420: %%1809 %%4423: %%1811 D:(A;OICI;FA;;;S-1-5-21-3457937927-2839227994-823803824-1104) %%4424: %%1809</Data>
    <Data Name="AccessMask">0x12019f</Data>
    <Data Name="PrivilegeList">-</Data>
    <Data Name="RestrictedSidCount">0</Data>
    <Data Name="ProcessId">0x1074</Data>
    <Data Name="ProcessName">C:\\Windows\\System32\\notepad.exe</Data>
    <Data Name="ResourceAttributes">S:AI(RA;ID;;;;WD;("Impact\_MS",TI,0x10020,3000))</Data>
  </EventData>
</Event>

References

4 links

Source: evtx/Maps/Security_Microsoft-Windows-Security-Auditing_4656.map(opens in new tab) by Andrew Rathbun and contributors(opens in new tab), MIT License(opens in new tab)