Malware in dotnet-runtime-base
Malware discovered in the npm package dotnet-runtime-base. 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
- dotnet-runtime-basenpm package
A malicious npm package named dotnet-runtime-base 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 on 2026-07-13 via GitHub Advisory GHSA-9gr8-wg29-9wvv.
Indicators of compromise
- Packages
- dotnet-runtime-base
Remediation
- Immediately remove the dotnet-runtime-base package from all systems
- Rotate all secrets, keys, and credentials from a different, unaffected computer
- Perform a full security audit and malware scan of any affected systems
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider full system reimaging if compromise is confirmed
- Monitor for any lateral movement or persistence mechanisms left by the malware
Sources
- GitHub Advisory GHSA-9gr8-wg29-9wvv · GitHub Advisory Database
Cite this entry
"Malware in dotnet-runtime-base." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 13, 2026; last updated July 13, 2026. https://supplychainattack.org/incident/malware-in-dotnet-runtime-base-hz2yci
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