{"id":"MAL-2026-18994","summary":"Malicious code in mybotthisoneis (npm)","details":"mybotthisoneis 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/dlcine450/fll/refs/heads/main/fl2.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":"2026-11-09T23:15:32.500162435Z","published":"2026-10-27T00:00:00Z","database_specific":{"iocs":{"urls":["https://raw.githubusercontent.com/dlcine450/fll/refs/heads/main/fl2.json"],"domains":["raw.githubusercontent.com"],"files":[{"paths":["lib/Socket/newsletter.js"],"digests":{"sha256":"f3e181c8c9b0945e841276cb90669a53f2551a5304c8bd3e79cd4da929ef2359"}}],"ips":[]}},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/mybotthisoneis"},{"type":"WEB","url":"https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/"}],"affected":[{"package":{"name":"mybotthisoneis","ecosystem":"npm","purl":"pkg:npm/mybotthisoneis"},"versions":["1.0.0"],"database_specific":{"cwes":[{"name":"Embedded Malicious Code","cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature."}],"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/mybotthisoneis/MAL-2026-18994.json"}}],"schema_version":"1.9.2","credits":[{"name":"CyberXYZ","contact":["https://cyberxyz.io"],"type":"FINDER"}]}