The 'st-biginteger' package at version 5.0.5 on the npm ecosystem has been identified as containing malicious code. Installation or execution of this package results in a full compromise of the affected system. The malicious code potentially grants an attacker full control over the computer, making it unsafe to trust any stored secrets or keys. Removal of the package alone is insufficient to ensure system integrity, as additional malicious artifacts may persist.

Systems with 'st-biginteger' version 5.0.5 installed or running are considered fully compromised. Attackers may have gained complete control over the system, risking exposure of all stored secrets and keys. This level of compromise can lead to unauthorized access, data theft, and persistent malicious presence.

Remove the 'st-biginteger' package version 5.0.5 immediately. Rotate all secrets and keys from a different, uncompromised computer. Conduct a thorough system investigation and remediation, as removal of the package alone does not guarantee elimination of all malicious components. Consider rebuilding the affected system to ensure full eradication of the compromise.