MAL-2026-10404

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## Source: amazon-inspector (504d38d63d27d90e825007078cde3c381daa6cfa73a8009797c60f3e889c44d0) The package presents itself as a deterministic WASM slot-math engine, but slot_engine.wasm embeds obfuscated Node.js modules and Emscripten JS shim helpers that implement a full remote-access and credential-theft toolkit against the consumer host. On invocation, an embedded module opens a Node `require`/`createRequire` context, POSTs an installer-identifying id to a remote HTTPS endpoint on a jittered polling loop, and executes the returned code via `new Function(code)(require)` — giving the operator arbitrary code execution on every poll. WASM-imported helpers additionally: download a Windows `.exe` installer over HTTPS (following redirects) to a temp path and spawn it detached with the silent-install flag `/S`; fetch and extract a macOS `.pkg` via `xar -x`; and write `#!/bin/sh` + `exec node` polyglot wrapper scripts with mode 0755. Separate helpers enumerate Chromium-family and Firefox-family browser profile directories (Chrome, Brave, Edge, Opera, Vivaldi, Chromium, Firefox, Waterfox, LibreWolf, Pale Moon) for Login Data / logins.json / Cookies / Local Storage / IndexedDB / extension wallet stores, walk the home directory for wallet/keystore/.dat files, and read shell-history dotfiles, then package matching content for exfiltration through the C2 channel. The Emscripten shim and both embedded ES modules are obfuscator.io-transformed (rotated base64 string arrays, dispatchers, arithmetic-noise constants, self-defending IIFE); legitimate Emscripten output is not obfuscated. Cover strings such as 'Compiling engine dependencies. This may take a while on initial startup...' are embedded to disguise payload staging as normal engine initialization.