Malware in loader1
The npm package loader1 contained malware that provided 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
- loader1
The npm package loader1 was found to contain malware. According to the GitHub advisory, any computer that has this package installed or running should be considered fully compromised, with all secrets and keys stored on that computer requiring immediate rotation from a different system.\n\nThe malware grants outside entities full control of affected systems. 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.\n\nAffected users should treat any system that installed or ran loader1 as potentially fully compromised and take appropriate incident response measures.
Indicators of compromise
- Packages
- loader1
Remediation
- Remove the loader1 package immediately
- Rotate all secrets, keys, and credentials from a different, uncompromised computer
- Assume full system compromise and conduct thorough forensic analysis
- Monitor affected systems for signs of persistent malware or backdoors
- Consider rebuilding affected systems from clean media if possible
Sources
- GitHub Advisory GHSA-wp48-4xqv-v7fq · GitHub Advisory Database
Cite this entry
"Malware in loader1." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 16, 2026; last updated July 16, 2026. https://supplychainattack.org/incident/malware-in-loader1-1yqvxa
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