Malicious Shai-Hulud npm Worm Staging Script Execution on Linux

ATT&CK techniques

Initial Access → Execution

Recon
Resource Dev
Initial Access
- T1195.002Compromise Software Supply Chain
Execution
- T1059.004Unix Shell
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects execution of the temporary shell scripts dropped by the Shai-Hulud npm supply chain worm which stage credential harvesting GitHub repository migration and malicious Actions workflow deployment on compromised developer and CI hosts. These specific script paths are created during the postinstall phase to propagate the worm and exfiltrate secrets so their execution is a strong compromise signal.

Reporting behind it

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Malicious Shai-Hulud npm Worm Staging Script Execution on Linux

Pivot detection · T1059.004 · 9 related

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

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