Malware in magwien.sys
Malware discovered in the npm package magwien.sys. Any computer with this package installed or running should be considered fully compromised, with all secrets and keys requiring immediate rotation from a different system.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running is considered fully compromised.
- Ecosystems
- Attack vectors
- Affected entities
- magwien.sys
The npm package magwien.sys has been identified as containing malware. According to the GitHub advisory, any computer that has this package installed or running should be considered fully compromised.\n\nImmediate action is required: all secrets and keys stored on affected computers must be rotated immediately from a different, uncompromised computer. 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 package installation, as the outside entity may have gained full control of the system.\n\nThis is a critical supply chain incident affecting the npm ecosystem.
Indicators of compromise
- Packages
- magwien.sys
Remediation
- Immediately isolate any computer that has magwien.sys installed or running from the network
- Rotate all secrets, keys, and credentials from a different, uncompromised computer
- Remove the magwien.sys package from all affected systems
- Perform a full security audit and malware scan on all affected systems
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider full system reimaging if full compromise is suspected
Sources
- GitHub Advisory GHSA-7rgq-99ww-vfgr · GitHub Advisory Database
Cite this entry
"Malware in magwien.sys." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 29, 2026; last updated June 29, 2026. https://supplychainattack.org/incident/malware-in-magwien-sys-1al0yt
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