Malware in internallib_v856
Malware discovered in the npm package internallib_v856. Systems with this package installed are considered fully compromised and require immediate remediation.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- internallib_v856
A malicious npm package named internallib_v856 has been identified and published to the npm registry. The package contains malware that grants full control of affected systems to an outside entity.\n\nAny computer with this package installed or running should be considered fully compromised. The advisory recommends immediate rotation of all secrets and keys from a different, unaffected computer. While the package should be removed, complete removal of all malicious software cannot be guaranteed due to the level of system compromise.\n\nThis incident was disclosed via GitHub Advisory GHSA-9jj2-f2qc-pm2j on 2026-06-15.
Indicators of compromise
- Packages
- internallib_v856
Remediation
- Immediately identify all systems with internallib_v856 installed
- Isolate affected systems from the network
- Rotate all secrets, keys, and credentials from a clean, unaffected computer
- Remove the internallib_v856 package from all systems
- Perform forensic analysis to identify any additional malicious software installed
- Monitor affected systems for signs of compromise and unauthorized access
- Consider full system rebuild or replacement as the package may have granted persistent access
Sources
- GitHub Advisory GHSA-9jj2-f2qc-pm2j · GitHub Advisory Database
Cite this entry
"Malware in internallib_v856." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 15, 2026; last updated June 16, 2026. https://supplychainattack.org/incident/malware-in-internallib-v856-irx047
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