The bigops-auth npm package version 35.8.6 includes malicious code that, upon being required, reconstructs obfuscated domain names to download a platform-specific executable from attacker-controlled servers. This executable is saved in temporary directories with names resembling legitimate diagnostic artifacts, made executable, and then executed detached via shell commands. The malicious payload uses environment variables and file modification time cooldowns to evade detection and repeated execution. The package does not verify the integrity of the downloaded executable and executes it immediately on the host, effectively giving full control to the attacker. The package is presented as an authentication token handler but is a supply chain malware threat. Removal of the package does not guarantee full remediation due to potential persistent compromise.

Systems with bigops-auth version 35.8.6 installed are fully compromised, allowing remote code execution from attacker-controlled infrastructure. This leads to complete loss of system integrity and confidentiality. All secrets and keys stored on the compromised system are at risk and must be rotated immediately from a different, secure device. The malicious code executes automatically during package loading, increasing the risk of unnoticed compromise.

No official patch or fix is currently available. The bigops-auth package version 35.8.6 should be removed immediately. Due to the high risk of full system compromise, all secrets and keys stored on the affected system must be rotated from a separate, uncompromised device. Monitor for any signs of persistent malicious activity, as removal of the package alone may not fully remediate the infection. Check vendor or repository advisories for any updates or official remediation guidance.