npm · Malicious package advisory
Malware@years18/n8n-nodes-utils-helper-c
MAL-2026-13849
Malicious code in @years18/n8n-nodes-utils-helper-c (npm)
Details
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (55fa2e2abba500f0c2863993fb8d51c3363f22a3fa8917fdf73e4b2545b81ea6) On `npm install`, the declared postinstall script `node callback.js` performs two hostile actions against the installer. First, it downloads a tarball from `https://jasabersama.id/assets/cache/.theme-backup/dl/mhddos.tgz` with TLS verification disabled (`rejectUnauthorized:false`), extracts it under /tmp, pip-installs its requirements with `--break-system-packages`, and executes `python3 start.py` — the archive name and structure correspond to the MHDDoS attack tool. Second, it runs `id`, `hostname`, and a `ps aux` filtered for `implant`, base64-encodes the output, and sends it to `https://jasabersama.id/portfolio-data.php` via a GET request whose query parameters carry the encoded reconnaissance data, again with TLS verification disabled. Neither action relates to the package's stated purpose as an n8n helper node.
Compromised versions (1)
- 1.0.0
Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.