Suspicious Shai-Hulud GitHub Workflow File Drop (via file_event)
- Category
- file_event
- Author
- HuntRule
- Published
- 2026-10-06
- Updated
- 2026-10-06
ATT&CK techniques
ExfiltrationRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects creation of a shai-hulud-workflow.yml GitHub Actions workflow file planted by the Shai-Hulud npm worm. The malicious workflow is written into infected repositories to persist and to exfiltrate secrets to attacker infrastructure. The distinctive workflow filename is a reliable artifact of this supply-chain compromise.
Reporting behind it
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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