MAL-2026-4197 Malicious code in pretty-logger-utils (npm)
- Package
- pretty-logger-utils
- Registry
- npm
What is MAL-2026-4197?
MAL-2026-4197 is a malicious package in pretty-logger-utils, published on 20 May 2026.
Official description
pretty-logger-utils is a malicious npm package that depends on terminal-logger-utils and triggers the malicious behavior in that package when installed or imported.
The terminal-logger-utils payload executes a postinstall hook that opens utils.cjs, an obfuscated malware dropper. The dropper downloads and runs a platform-specific second-stage binary from Hugging Face. The second-stage payload provides keylogger, infostealer, and RAT behavior, steals sensitive local data including Telegram Desktop sessions, browser login databases, crypto wallets, SSH keys, cloud configurations, environment variables, and keyword-matched files, and connects to a remote server for full machine control.
What should I do about MAL-2026-4197?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.