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Malicious package

@years19/n8n-nodes-utils-helper-wnpm

@years19/n8n-nodes-utils-helper-w is a confirmed malicious npm package (MAL-2026-13906) 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 @years19/n8n-nodes-utils-helper-w (npm)

MAL-2026-13906
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @years19/n8n-nodes-utils-helper-w

What this malware does

The package's postinstall entry (callback.js) and its declared main entry (index.js) contain byte-identical top-level code that (1) writes a Python UDP/TCP flooding script to /tmp/attack2.py targeting the hardcoded IP 103.118.252.21 for 900 seconds and launches it via nohup python3 /tmp/attack2.py... &, and (2) collects the installer's shell id, hostname, /proc/loadavg and process listing, base64-encodes the blob, and sends it as a query parameter to https://jasabersama.id/portfolio-data.php with TLS verification disabled (rejectUnauthorized: false). Both triggers fire automatically: the postinstall runs on npm install, and the identical main module runs again when n8n loads the community node via require(). The package presents itself as an n8n utility helper but ships no functional node code matching that purpose.

Malicious versions

1 flagged
1.0.0

Indicators of compromise (SHA-256)

a28114a258d77475252e0b9f61b21d3f82f8d7d9e2d37bbce9d4a70c2ff0bfa5

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 @years19/n8n-nodes-utils-helper-w (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 @years19/n8n-nodes-utils-helper-w across your stack and pipelines.

  2. If you installed it — respond

    Remove @years19/n8n-nodes-utils-helper-w 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 @years19/n8n-nodes-utils-helper-w 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 @years19/n8n-nodes-utils-helper-w 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. @years19/n8n-nodes-utils-helper-w 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-2026-017577

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @years19/n8n-nodes-utils-helper-w-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
@years19/n8n-nodes-utils-helper-w (npm) malicious package — MAL-2026-13906 | O3 Security