huntrule

Linux Process Creation: npm install of Shai-Hulud 2.0 malicious packages by name and version

Alerts on Linux npm install commands referencing known Shai-Hulud 2.0 malicious package versions.

FreeReviewedSigma · High · v5
Product
linux
Category
process_creation
Author
Swachchhanda Shrawan Poudel (Nextron Systems) (SigmaHQ), DRL 1.1
Published
2025-11-28
Updated
2026-07-31
AnalysisDetection

ATT&CK techniques

Initial Access

  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 Linux command-line executions that install a set of known suspicious npm package names and versions associated with the Shai-Hulud 2.0 supply-chain campaign. Attackers can use npm package installation to introduce malicious code into development environments or applications during dependency setup. The detection relies on process creation telemetry, specifically the image path ending in a node install context and command-line substrings indicating npm install alongside matching package@version patterns.

Reporting behind it

Related detections9 linkedT1195.002 — drag to rearrange
Suspicious Child Process Spawned by Python Interpreter via Process Creation
Suspicious npm Postinstall Node Execution From Fixtures Path (BeaverTail OtterCookie)
Suspicious TrueConf Update Chain Spawning Temporary Executable in Operation TrueChaos
Malicious TeamPCP durabletask Payload python3 managed.pyz from tmp (via process_creation)
Malicious PowerShell Download from bullethost.cloud Staging Server
Suspicious NPM Install Hook Executing Setup Script via Node
Suspicious Shai-Hulud Worm Stager Execution from Temp (via process_creation)
Suspicious Double Base64 Decoded Payload Piped to Shell in CI (reviewdog Supply Chain)
Suspicious Node.js Spawning PowerShell Archive Download to Temp
Linux Process Creation: npm install of Shai-Hulud 2.0 malicious packages by name and version
Pivot detection · T1195.002 · 9 related

Changelog

v5
  1. v5
    Candidate ingested via manual entry.2026-07-31
  2. v4
    Candidate ingested via manual entry.2026-07-31
  3. v3
    Candidate ingested via manual entry.2026-07-31
  4. v2
    Candidate ingested via manual entry.2026-07-31
  5. v1
    No changelog recorded for this version.2026-07-30

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