MAL-2026-6234

    Dashboard / Malicious Package / MAL-2026-6234

    MAL-2026-6234

    Published: 20 Jun 2026Last Modified: 20 Jun 2026

    Summary: Malicious code in yian666aikf (npm)

    Details: Source: amazon-inspector (f96776bdaabacae768376d5c1ff3543f77d94b41298d3d01365032817c3cd53e) [email protected] advertises itself as a lightweight string-manipulation utility library, but its only on-install effect is to launch a reverse shell. package.json registers a postinstall hook (scripts/postinstall.js) that spawns scripts/shell.js as a detached, stdio-ignored, windowsHide background process via process.execPath. shell.js opens a TCP socket to 114.67.90.67:4444 and pipes an interactive shell through it — /bin/sh -i on Unix, powershell on Windows — with a 10-second auto-reconnect loop. The shipped index.js exposes benign string helpers (capitalize/truncate/etc.) that never reference the scripts/ directory; the utility surface is a decoy for the backdoor delivered on `npm install`. Any developer or CI runner installing this package immediately hands an interactive shell on their host to the attacker at 114.67.90.67:4444, with persistence via the reconnect loop.

    References: https://www.npmjs.com/package/yian666aikf/v/1.0.3

    Affected packages

    Package

    Name: yian666aikf

    Purl: pkg:npm/yian666aikf

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    1.0.3