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MediumSplunk security contentMichael Haag +1

Shai-Hulud 2 Exfiltration Artifact Files

Detects creation of exfiltration artifact files associated with Shai-Hulud 2.0 npm supply chain malware. The malware creates cloud.json, contents.json, environment.json, truffleSecrets.json, and actionsSecrets.json…

Description

Detects creation of exfiltration artifact files associated with Shai-Hulud 2.0 npm supply chain malware. The malware creates cloud.json, contents.json, environment.json, truffleSecrets.json, and actionsSecrets.json files containing harvested credentials from AWS, Azure, GCP, GitHub secrets, and environment variables. These files are staged before being pushed to attacker-controlled repositories.

Detection logic

Detection requirements

Platform
ContainersESXiIaaSLinuxmacOSWindows

The rule states no platform. This is derived from the 3 ATT&CK techniques it maps to.

Log source category
sysmon_eventid_11sysmon_for_linux_eventid_11

Known benign triggers

  • Low but possible. Generic filenames like cloud.json or environment.json may appear in legitimate contexts. Correlate with npm install activity or suspicious parent processes.

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