Suspicious Pastebin Raw Content Retrieval via curl (via process_creation)

PremiumReviewedSigma · Medium · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-09-21
Updated
2026-09-21

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. Exfiltration

  13. Impact

What it detects

This rule detects curl fetching raw content from pastebin.com, the technique the D3F@ck loader batch uses to retrieve a follow-on download URL into url.txt. Pulling raw Pastebin text via curl on an endpoint is a common staging pattern for loaders and is atypical of normal user activity. This drives the loader's ingress of the 125.exe payload.

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Suspicious Pastebin Raw Content Retrieval via curl (via process_creation)
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.