Emerging Threathighexperimental
Shai-Hulud Malicious GitHub Workflow Creation
Detects creation of shai-hulud-workflow.yml file associated with Shai Hulud worm targeting NPM supply chain attack that exfiltrates GitHub secrets
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Launch
Swachchhanda Shrawan Poudel (Nextron Systems)Created Wed Sep 24Updated Sat Jan 240aba5685-6db6-486f-88ef-29a99c545cfd2025
Emerging Threat
Active Threat
Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.
Log Source
LinuxFile Event
ProductLinux← raw: linux
CategoryFile Event← raw: file_event
Events for file system activity including creation, modification, and deletion.
Detection Logic
Detection Logic1 selector
detection:
selection:
TargetFilename|endswith:
- '.github/workflows/shai-hulud-workflow.yaml'
- '.github/workflows/shai-hulud-workflow.yml'
- '.github/workflows/shai-hulud.yaml'
- '.github/workflows/shai-hulud.yml'
condition: selectionFalse Positives
Unlikely
False positives are unlikely for most environments. High confidence detection.
References
MITRE ATT&CK
Techniques
Sub-techniques
Other
detection.emerging-threats
Rule Metadata
Rule ID
0aba5685-6db6-486f-88ef-29a99c545cfd
Status
experimental
Level
high
Type
Emerging Threat
Created
Wed Sep 24
Modified
Sat Jan 24
Path
rules-emerging-threats/2025/Malware/Shai-Hulud/file_event_lnx_mal_shai_hulud_workflow.yml
Raw Tags
attack.persistenceattack.credential-accessattack.t1552.001attack.collectionattack.t1119detection.emerging-threats