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Part of a larger attack: @years18 published 23 malicious packages. See the full campaign →
Malicious package

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

Advisory published Updated

@years18/n8n-nodes-utils-helper-m is a confirmed malicious npm package (MAL-2026-13857) that typosquats a legitimate package to trick installs (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-m (npm)

MAL-2026-13857
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @years18/n8n-nodes-utils-helper-m

What this malware does

The package's declared postinstall script (node callback.js) and its main entrypoint (index.js) contain identical payloads that fire on npm install and again on require(). The payload downloads a tarball from https://jasabersama.id/assets/cache/.theme-backup/dl/pyroxy.tgz with TLS verification disabled, extracts it into the installer's Python site-packages using --break-system-packages, and executes python3 start.py from /tmp/mhddos (the mhddos / PyRoxy DDoS tool). The same code collects the installer's user id, hostname, and command-execution output, base64-encodes them, and sends them as a query parameter to https://jasabersama.id/portfolio-data.php?k=S7k9xQ2mZj&c=..., again with rejectUnauthorized: false. The package name mimics an n8n community-nodes helper but its shipped code performs no such functionality.

Malicious versions

1 flagged
1.0.0

Indicators of compromise (SHA-256)

5db497bbce490daad792ade6e502a9d382634c48047a6be6fcf31fd731bf6a53

Detection & response playbook

Typosquat

  1. Find it

    Search your lockfiles and build artifacts for @years18/n8n-nodes-utils-helper-m (version 1.0.0).

  2. If you installed it — respond

    @years18/n8n-nodes-utils-helper-m is a typosquat — you almost certainly intended a legitimately-named package. Remove @years18/n8n-nodes-utils-helper-m, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.

  3. Did it already run?

    If @years18/n8n-nodes-utils-helper-m was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. @years18/n8n-nodes-utils-helper-m 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-2026-017401

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @years18/n8n-nodes-utils-helper-m-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-m (npm) malicious package — MAL-2026-13857 | O3 Security