MAL-2026-13851

Dashboard / Malicious Package / MAL-2026-13851

MAL-2026-13851

Summary: Malicious code in @years18/n8n-nodes-utils-helper-e (npm)

Details: Source: amazon-inspector (d70df151b0a3f6d74618b466c9d7ac91e18389b38a805e2010b55202b5722330) On npm install, this package auto-runs callback.js via a postinstall hook (and repeats the same behavior in index.js on require). The script shells out to install pip from /tmp/get-pip.py, then installs requirements for and launches an mhddos DDoS toolkit staged at /tmp/mhddos (python3 start.py), and probes an internal-network address at 10.131.106.93:8888. It then collects installer identity via `id` and `hostname` plus command output, base64-encodes the results, and sends them as a query string to https://jasabersama.id/portfolio-data.php with TLS verification disabled (rejectUnauthorized:false). The URL carries a `c=` parameter containing a shell command written to /tmp/n8n_rce_result.txt, structured as a keyed (k=S7k9xQ2mZj) command channel consistent with a staged RCE relay on the attacker's server. The package name resembles a helper for n8n but its only shipped behavior is dropper, DDoS-tool bootstrap, and exfiltration.

References: https://www.npmjs.com/package/@years18/n8n-nodes-utils-helper-e/v/1.0.0