huntrule

Windows Process Creation: PowerShell COM CLSID Download Cradles

Alerts on PowerShell command lines using GetTypeFromCLSID with selected CLSIDs that may be used to download files via COM.

FreeReviewedSigma · Medium · v1
Product
windows
Category
process_creation
Author
frack113 (SigmaHQ), DRL 1.1
Published
2022-12-25
Updated
2026-07-30
AnalysisDetection

ATT&CK techniques

C2

  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

  14. Impact

What it detects

This rule flags process creation events where a command line contains the PowerShell pattern [Type]::GetTypeFromCLSID( and matches specific CLSIDs associated with COM objects that can be used as download cradles. Attackers may leverage COM activation via PowerShell to retrieve external content and enable follow-on execution. The detection relies on Windows process creation telemetry with the full command line, including the CLSID values and the GetTypeFromCLSID call pattern.

Reporting behind it

Related detections9 linkedT1105 — drag to rearrange
Suspicious File Download via CertUtil URLCache (via process_creation)
Suspicious PowerShell Download of Disguised Payload to ProgramData
Suspicious PowerShell WebClient Download of Executable Payload
Malicious JADEPUFFER Lockd Ransomware Payload Download
Malicious Second-Stage Loader Fetch of SLT Payload via Curl or Wget
Possible Remote Payload Download And Execution via Shell (via process_creation)
Suspicious EtherRAT Node.js Implant Background Execution via Shell (via process_creation)
Suspicious Certutil Download and Certificate Installation via Living-off-the-Land
Suspicious PowerShell Remote Script Execution via IEX DownloadString
Windows Process Creation: PowerShell COM CLSID Download Cradles
Pivot detection · T1105 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.