Elastic high stable eql

Potential Credential Access via LSASS Memory Dump

Identifies suspicious access to LSASS handle from a call trace pointing to DBGHelp.dll or DBGCore.dll, which both export the MiniDumpWriteDump method that can be used to dump LSASS memory content in preparation for credential access.

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Detection Logic

process where host.os.type == "windows" and event.code == "10" and
  winlog.event_data.TargetImage : "?:\\WINDOWS\\system32\\lsass.exe" and

  /* dbgcore.dll hosts MiniDumpWriteDump on modern Windows; dbghelp-only traces are non-dump usage */
  winlog.event_data.CallTrace : "*dbgcore*" and

  /* crash handlers */
  not process.executable : (
        "?:\\Windows\\System32\\WerFault.exe",
        "?:\\Windows\\SysWOW64\\WerFault.exe",
        "?:\\Windows\\System32\\WerFaultSecure.exe"
      )

Field Validations

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