MAL-2026-13947

    Dashboard / Malicious Package / MAL-2026-13947

    MAL-2026-13947

    Published: 13 Aug 2026Last Modified: 13 Aug 2026

    Summary: Malicious code in date-fmt-utils-helper (npm)

    Details: Source: amazon-inspector (4ae88f68f30ebd69a595537393ce95c4ce5e543b558572769fa2c608fa1b1b0d) The package presents itself as a date-formatting utility, but its index.js is a trivial cover and a source comment explicitly labels the library as a disguise. The package.json postinstall hook runs node postinstall.js on npm install, which opens a TCP connection to the hardcoded remote host 8.135.48.40:4444 and pipes /bin/sh stdio over the socket, with bash -i >& /dev/tcp/... and python3 pty.spawn fallbacks, giving the remote party interactive shell access on the installer's machine at install time. On failure the script beacons error details via HTTP GET to http://8.135.48.40/shell/failed and /shell/error, confirming the destination is attacker-controlled command-and-control infrastructure.

    References: https://www.npmjs.com/package/date-fmt-utils-helper/v/1.0.0

    Affected packages

    Package

    Name: date-fmt-utils-helper

    Purl: pkg:npm/date-fmt-utils-helper

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    1.0.0
    MAL-2026-13947 | CVE-DB