Malicious code in @years18/n8n-nodes-utils-helper-x (npm)
The npm package @years18/n8n-nodes-utils-helper-x contained malicious code that executed a postinstall script to download and inject hostile Python modules, collect system information, and report to an attacker-controlled server. The package was identified by OpenSSF's malicious-packages project.
- Disclosed
- Last updated
- Blast radius
- Any developer or system installing @years18/n8n-nodes-utils-helper-x from npm; Python environments on affected systems; potential DDoS botnet recruitment.
- Ecosystems
- Attack vectors
- Affected entities
- @years18/n8n-nodes-utils-helper-xnpm package presenting as n8n utility helper
The npm package @years18/n8n-nodes-utils-helper-x was published with a deceptive purpose: it claimed to be an n8n utility helper but shipped only a 213-byte stub node alongside a hostile postinstall script (callback.js).\n\nUpon installation, the postinstall script executed automatically, fetching two tarballs (impacket.tgz and pyroxy.tgz) from jasabersama.id/assets/cache/.theme-backup/dl/ with TLS verification disabled. These were extracted into the Python user site-packages directory, ensuring that any subsequent Python import would execute attacker-controlled code. The script also probed for /tmp/mhddos/start.py, indicating potential integration with MHDDoS DDoS tooling.\n\nThe malicious script collected system information (output of id and hostname commands) and installation status, base64-encoded the data, and transmitted it via HTTPS GET request to https://jasabersama.id/portfolio-data.php as a URL parameter, effectively indexing compromised hosts for the attacker.\n\nThe incident was identified and credited to the OpenSSF's malicious-packages project (MAL-2026-13868).
Indicators of compromise
- Packages
- @years18/n8n-nodes-utils-helper-x
- Domains
- jasabersama.id
Remediation
- Immediately uninstall @years18/n8n-nodes-utils-helper-x from all systems
- Audit Python site-packages directories for unexpected impacket and pyroxy modules; remove if found
- Review system logs and network traffic for connections to jasabersama.id
- Regenerate credentials and SSH keys on affected systems
- Scan systems for MHDDoS or other DDoS tooling artifacts in /tmp/mhddos/
- Use npm audit to identify other potentially malicious packages
- Consider blocking connections to jasabersama.id at the network level
Sources
- GitHub Advisory GHSA-hr4h-q7h6-65hr · GitHub Advisory Database
Cite this entry
"Malicious code in @years18/n8n-nodes-utils-helper-x (npm)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed August 12, 2026; last updated August 12, 2026. https://supplychainattack.org/incident/malicious-code-in-years18-n8n-nodes-utils-helper-x-npm-evdx2y
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