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Malicious package

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

@years19/n8n-nodes-utils-helper-s is a confirmed malicious npm package (MAL-2026-13902) that steals credentials and exfiltrates sensitive data (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-s (npm)

MAL-2026-13902
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @years19/n8n-nodes-utils-helper-s

What this malware does

The package's postinstall script writes /tmp/attack.py — a Python UDP/TCP flooder targeting the hardcoded IP 103.118.252.21 on ports 80/443 for 600 seconds — and launches it in the background via nohup python3. The same code path is present in index.js, which is declared as the package main, so require()ing the module re-triggers the dropper even when installation runs with --ignore-scripts. Both files also collect installer host identity (id, hostname, process listing, /proc/loadavg), base64-encode the data, and send it via HTTPS GET to jasabersama.id/portfolio-data.php with TLS verification disabled (rejectUnauthorized: false). The package presents itself as an n8n utility node but contains no such functionality; its only behavior is host reconnaissance exfiltration and using the installer's machine as a DDoS bot against a third-party target.

Malicious versions

1 flagged
1.0.0

Indicators of compromise (SHA-256)

2955ed4843fe66495bbe53420b28e91530f48facae3aea0a9c3719676c30c0a5

Detection & response playbook

Credential / info stealer

  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-s (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-s across your stack and pipelines.

  2. If you installed it — respond

    @years19/n8n-nodes-utils-helper-s is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

  3. Did it already run?

    If @years19/n8n-nodes-utils-helper-s 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-s 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-s 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-2026-017582

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @years19/n8n-nodes-utils-helper-s-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database
@years19/n8n-nodes-utils-helper-s (npm) malicious package — MAL-2026-13902 | O3 Security