Malware in whs4_npm_test
The npm package whs4_npm_test contains malware that grants full system compromise to attackers. Any computer with this package installed or running should be considered fully compromised.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- whs4_npm_test
The npm package whs4_npm_test has been identified as containing malware. According to the GitHub Advisory (GHSA-pjv5-35wr-prrm), any computer that has this package installed or running should be considered fully compromised.\n\nThe advisory recommends that all secrets and keys stored on affected computers be rotated immediately from a different, uncompromised system. While the package should be removed, there is no guarantee that removal will eliminate all malicious software that may have been installed as a result of the initial compromise, given that the attacker may have gained full control of the system.\n\nUsers should treat any system that has run this package as potentially containing persistent malware and take appropriate incident response measures.
Indicators of compromise
- Packages
- whs4_npm_test
Remediation
- Immediately remove the whs4_npm_test package from all systems
- Rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Perform a full security audit and malware scan of any affected systems
- Consider the affected systems as potentially compromised and plan for full reimaging or replacement
- Review access logs and audit trails for any unauthorized activity on affected systems
- Notify relevant stakeholders and security teams of the compromise
Sources
- GitHub Advisory GHSA-pjv5-35wr-prrm · GitHub Advisory Database
Cite this entry
"Malware in whs4_npm_test." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 7, 2026; last updated July 7, 2026. https://supplychainattack.org/incident/malware-in-whs4-npm-test-1t0l8x
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