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containedcritical

Malware in ethers.json

Malware was discovered in the ethers.json npm package. Systems with the package installed or running are considered fully compromised and require immediate remediation including secret rotation and package removal.

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Disclosed
Last updated
Blast radius
Any system with the package installed or running
Ecosystems
npm
Attack vectors
Compromised package
Affected entities
  • ethers.jsonnpm package containing malware

The ethers.json npm package was found to contain malware. According to the GitHub Advisory (GHSA-q64r-f9q5-x6m3), any computer with 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 package installation, given the potential for full system compromise.\n\nUsers should assume that an outside entity may have gained complete control of affected systems and take appropriate defensive measures accordingly.

Indicators of compromise

Packages
  • ethers.json

Remediation

  • Immediately rotate all secrets and keys stored on affected computers from a different, uncompromised system
  • Remove the ethers.json package from all affected systems
  • Conduct a full security audit and forensic analysis of any system that had the package installed
  • Monitor affected systems for signs of unauthorized access or persistence mechanisms
  • Consider the affected system(s) potentially compromised and plan for full rebuild if critical infrastructure

Sources

  1. GitHub Advisory GHSA-q64r-f9q5-x6m3 · GitHub Advisory Database

Cite this entry

"Malware in ethers.json." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 30, 2026; last updated July 30, 2026. https://supplychainattack.org/incident/malware-in-ethers-json-piemxj

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