Suspicious Office Application Spawning Script Interpreter (via process_creation)

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-06-02
Updated
2026-08-28

ATT&CK techniques

Execution → Defense Evasion
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Persistence

  5. Priv Esc

  6. Cred Access

  7. Discovery

  8. Lateral Movement

  9. Collection

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects Excel or Word spawning a scripting interpreter such as wscript or powershell which the DarkGate remote template injection chain triggers to move from a malicious document to a VBS and PowerShell stager. Office applications launching script hosts is a hallmark of macro and template based initial access.

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Suspicious PowerShell Download Cradle via IEX and DownloadString (via process_creation)
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Suspicious Office Application Spawning Script Interpreter (via process_creation)
Pivot detection · T1059.001 · 9 related

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