@zizie071/libsignal-nodenpm

On require(), index.js schedules install.js which locates the installer's @whiskeysockets/baileys package on disk and overwrites lib/Socket/newsletter.js with an embedded payload (MODIFIED_NEWSLETTER_JS). The injected code fetches a JSON list from https://raw.githubusercontent.com/pipih071/SilenceV3/refs/heads/main/ch.json (a mutable, attacker-controlled raw GitHub URL) and uses the installer's authenticated WhatsApp session to silently auto-follow channels listed in that file. install.js writes a marker file (.cache containing 'Iove') under Baileys' node_modules to track the patch and calls process.exit(0) after patching to mask the side effect. The package self-identifies as 'Open Whisper Systems' libsignal for Node.js' under the @zizie071 scope, mimicking the well-known libsignal-node library API surface (SessionBuilder, SessionCipher, etc.) so unsuspecting developers pull it in as a drop-in replacement. Three independent supply-chain harms are present: (1) cross-package tampering — the package mutates a sibling vendor's installed source on the installer's machine, (2) attacker-controlled remote behavior — the patched code reads a mutable URL on each run so the attacker can change targeted channels at any time, (3) namespace abuse / impersonation of a well-known cryptography library to deliver the payload.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.