MAL-2026-15856 Malicious code in @quantixfinance/ui (npm)

The package advertises itself as a UI component library but index.js only exports empty stub Button/Input/Card functions. The real behavior is in preinstall.js, which runs automatically on npm install. That script iterates process.env and collects any variable whose name matches a credential/wallet/RPC keyword list (key, secret, token, pass, mnemonic, seed, wallet, private, api, rpc, infura, alchemy, supabase, vercel, etc.), attaches hostname, cwd, and Node version, and POSTs the resulting JSON to an IPv4 destination written as the 32-bit integer 759017974 (resolves to 45.61.169.182) on port 61289. Encoding the destination as a decimal integer literal instead of a dotted-quad string is an evasion technique against naive string/regex scanners; Node's http.request accepts the numeric form and connects normally. The stub-UI-plus-preinstall-payload shape indicates the package exists solely to be installed under the assumption it is a real finance/crypto UI library and run its install-time secret harvester against the installer.