Suspicious Script Download via Curl and PowerShell by Dohdoor

PremiumReviewedSigma · Medium · v1
Category
process_creation
Author
HuntRule
Published
2026-09-11
Updated
2026-09-11

ATT&CK techniques

Execution → C2
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Persistence

  5. Priv Esc

  6. Defense Evasion

  7. Cred Access

  8. Discovery

  9. Lateral Movement

  10. Collection

  11. Exfiltration

  12. Impact

What it detects

This rule detects the curl utility downloading a batch or command script over HTTP. The Dohdoor campaign uses PowerShell wrapped curl requests to stage follow-on .bat and .cmd payloads. Fetching executable scripts through curl is characteristic of malware staging.

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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.