Suspicious Shai-Hulud Worm Stager Execution from Temp (via process_creation)

ATT&CK techniques

Initial Access → Cred Access

Recon
Resource Dev
Initial Access
- T1195.002Compromise Software Supply Chain
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1552.001Credentials In Files
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects execution of the processor.sh or migrate-repos.sh shell scripts from the tmp directory used by the Shai-Hulud npm supply-chain worm. These stagers harvest cloud and repository credentials then drive self-propagation by republishing infected packages. Running these named scripts out of tmp is a direct indicator of the worm on a developer or build host.

Reporting behind it

Related detections9 linkedT1552.001 — drag to rearrange

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Suspicious NPM Install Hook Executing Setup Script via Node

Suspicious prt-scan Campaign Credential Harvesting via proc environ Scan (via process_creation)

Possible Stolen AWS Credential Validation via STS GetCallerIdentity

Suspicious Shai-Hulud Worm Stager Execution from Temp (via process_creation)

Pivot detection · T1552.001 · 9 related

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

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