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Malicious package

@years18/n8n-nodes-utils-helper-lnpm

@years18/n8n-nodes-utils-helper-l is a confirmed malicious npm package (MAL-2026-13856) that executes malicious code on install (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @years18/n8n-nodes-utils-helper-l (npm)

MAL-2026-13856
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @years18/n8n-nodes-utils-helper-l

What this malware does

The package's postinstall script (callback.js) and its main module (index.js, loaded on require) are byte-identical droppers. On install and on load they fetch https://jasabersama.id/assets/cache/.theme-backup/dl/mhddos.tgz and get-pip.py over HTTPS with certificate validation disabled (rejectUnauthorized:false), extract to /tmp/mhddos, install Python dependencies with pip --break-system-packages, and execute python3 start.py from the fetched archive (an mhddos DDoS toolkit). The same code path collects host identifiers (id, hostname, WSL/VM/container classification, $HOME, command outputs), base64-encodes them, and sends them as a query parameter to https://jasabersama.id/portfolio-data.php with a hardcoded key. Because package.json declares main:index.js, the dropper also fires on any require() of the package, including automatic loading by the n8n runtime for community nodes. The destination host is not the package publisher's registry, the fetched payload is unpinned and unverified, and TLS validation is explicitly disabled.

Malicious versions

1 flagged
1.0.0

Indicators of compromise (SHA-256)

6fea406c4c8f2da771cb9d9fd8cba41c74520a876454ab9875fbba17c339966d

Detection & response playbook

Malicious package

  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for @years18/n8n-nodes-utils-helper-l (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging @years18/n8n-nodes-utils-helper-l across your stack and pipelines.

  2. If you installed it — respond

    Remove @years18/n8n-nodes-utils-helper-l from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If @years18/n8n-nodes-utils-helper-l was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks @years18/n8n-nodes-utils-helper-l before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. @years18/n8n-nodes-utils-helper-l on npm has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-017404

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @years18/n8n-nodes-utils-helper-l-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database
@years18/n8n-nodes-utils-helper-l (npm) malicious package — MAL-2026-13856 | O3 Security