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Suspicious Microsoft Diagnostics Wizard Execution

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Suspicious Microsoft Diagnostics Wizard Execution

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Identifies potential abuse of the Microsoft Diagnostics Troubleshooting Wizard (MSDT) to proxy malicious command or binary execution via malicious process arguments.

Rule type: eql

Rule indices:

  • logs-endpoint.events.process-*
  • winlogbeat-*
  • logs-windows.sysmon_operational-*
  • endgame-*
  • logs-m365_defender.event-*

Severity: high

Risk score: 73

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Domain: Endpoint
  • OS: Windows
  • Use Case: Threat Detection
  • Tactic: Defense Evasion
  • Data Source: Elastic Endgame
  • Data Source: Elastic Defend
  • Data Source: Microsoft Defender for Endpoint
  • Data Source: Sysmon

Version: 210

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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process where host.os.type == "windows" and event.type == "start" and
   (process.pe.original_file_name == "msdt.exe" or process.name : "msdt.exe") and
   (
    process.args : ("IT_RebrowseForFile=*", "ms-msdt:/id", "ms-msdt:-id", "*FromBase64*") or

    (process.args : "-af" and process.args : "/skip" and
     process.parent.name : ("explorer.exe", "cmd.exe", "powershell.exe", "cscript.exe", "wscript.exe", "mshta.exe", "rundll32.exe", "regsvr32.exe") and
     process.args : ("?:\\WINDOWS\\diagnostics\\index\\PCWDiagnostic.xml", "PCWDiagnostic.xml", "?:\\Users\\Public\\*", "?:\\Windows\\Temp\\*")) or

    (process.pe.original_file_name == "msdt.exe" and not process.name : "msdt.exe" and process.name != null) or

    (process.pe.original_file_name == "msdt.exe" and not process.executable : ("?:\\Windows\\system32\\msdt.exe", "?:\\Windows\\SysWOW64\\msdt.exe"))
    )

Framework: MITRE ATT&CKTM

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