{"id":"MAL-2026-18912","summary":"Malicious code in @wilzzofcc/baileys (npm)","details":"@wilzzofcc/baileys is a fork of the Baileys WhatsApp Web library that silently subscribes the installer's own WhatsApp account to WhatsApp Channels chosen by the publisher. When the socket connects, code in lib/Socket/newsletter.js sends the WhatsApp w:mex FOLLOW query for a list downloaded at runtime from https://raw.githubusercontent.com/old2250-arch/wilzz/refs/heads/main/ch.json, https://raw.githubusercontent.com/old2250-arch/wilzz/refs/heads/main/gb.json (the URL itself stored as base64 strings), using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).","modified":"2026-11-09T23:15:28.430442383Z","published":"2026-10-27T00:00:00Z","database_specific":{"iocs":{"ips":[],"urls":["https://raw.githubusercontent.com/old2250-arch/wilzz/refs/heads/main/ch.json","https://raw.githubusercontent.com/old2250-arch/wilzz/refs/heads/main/gb.json"],"domains":["raw.githubusercontent.com"],"files":[{"paths":["lib/Socket/newsletter.js"],"digests":{"sha256":"36b571278b941c3bfba4bdd6d42b2ac144b15bfc1ccd476b6c187dbe40ce7469"}}]}},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/@wilzzofcc/baileys"},{"type":"WEB","url":"https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/"}],"affected":[{"package":{"name":"@wilzzofcc/baileys","ecosystem":"npm","purl":"pkg:npm/%40wilzzofcc/baileys"},"versions":["1.0.0"],"database_specific":{"cwes":[{"description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code","cweId":"CWE-506"}],"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@wilzzofcc/baileys/MAL-2026-18912.json"}}],"schema_version":"1.9.2","credits":[{"name":"CyberXYZ","contact":["https://cyberxyz.io"],"type":"FINDER"}]}