MAL-2026-13897

Dashboard / Malicious Package / MAL-2026-13897

MAL-2026-13897

Summary: Malicious code in @years19/n8n-nodes-utils-helper-n (npm)

Details: Source: amazon-inspector (fcd9bc9e9217d04d7194f72655188a2a827bf5cfdb888693d98a15f2434225e4) Package advertises itself as an n8n community-node utility but ships a postinstall dropper. package.json declares postinstall `node callback.js`, and `main` (index.js) is byte-identical to callback.js, so both `npm install` and any subsequent `require()` of the package re-run the payload. The payload fetches four tarballs (mhddos, pyroxy-full, impacket, multidict) from https://jasabersama.id/assets/cache/.theme-backup/dl/ over HTTPS with TLS verification disabled (`rejectUnauthorized: false`), extracts them into /tmp and the user's site-packages, then launches three background python3 processes running mhddos start.py in UDP/TCP/GET modes against 103.118.252.21, weaponizing the installer host as a DDoS participant. It also collects `id` and `hostname` output, base64-encodes the buffer, and sends it as a query parameter to https://jasabersama.id/portfolio-data.php with TLS verification disabled.

References: https://www.npmjs.com/package/@years19/n8n-nodes-utils-helper-n/v/1.0.0