IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Suspicious Microsoft Diagnostics Wizard Executionedit
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.*
- winlogbeat-*
- logs-windows.*
Severity: high
Risk score: 73
Runs every: 5 minutes
Searches indices from: now-9m (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 100
References:
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Defense Evasion
Version: 3 (version history)
Added (Elastic Stack release): 8.3.0
Last modified (Elastic Stack release): 8.4.0
Rule authors: Elastic
Rule license: Elastic License v2
Investigation guideedit
Rule queryedit
process where event.type in ("start", "process_started") 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")) )
Threat mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: System Binary Proxy Execution
- ID: T1218
- Reference URL: https://attack.mitre.org/techniques/T1218/
Rule version historyedit
- Version 3 (8.4.0 release)
-
-
Updated query, changed from:
process where event.type in ("start", "process_started") 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")) )
-