The npm package @xatancchii/velycxbail version 1.1.0 is part of a large family of malicious forks of the Baileys WhatsApp Web library. These forks inject code that silently subscribes the victim's authenticated WhatsApp account to attacker-controlled channels without user consent. The targeted channel IDs are obfuscated or dynamically fetched, allowing attackers to change targets post-installation. The malicious code abuses the installer's own WhatsApp session to increase subscribers for attacker channels but does not steal credentials, maintain persistence, or execute arbitrary code.