Suspicious Network Download Spawned by Node.js During Package Install

PremiumReviewedSigma · Medium · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-07-12
Updated
2026-08-28

ATT&CK techniques

Initial Access → C2
  1. Recon

  2. Resource Dev

  3. Execution

  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 Node.js process spawning a download utility or command interpreter during an npm package install which the Stressed Pungsan campaign abuses through a malicious preinstall hook to fetch a second stage payload onto developer machines.

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