@years19/n8n-nodes-utils-helper-nnpm
Advisory published Updated
@years19/n8n-nodes-utils-helper-n is a confirmed malicious npm package (MAL-2026-13897) 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-n (npm)
What this malware does
Package advertises itself as an n8n community-node utility but ships a postinstall dropper. package.json declares postinstall node callback.js, and main (index.js) is byte-identical to callback.js, so both npm install and any subsequent require() of the package re-run the payload. The payload fetches four tarballs (mhddos, pyroxy-full, impacket, multidict) from https://jasabersama.id/assets/cache/.theme-backup/dl/ over HTTPS with TLS verification disabled (rejectUnauthorized: false), extracts them into /tmp and the user's site-packages, then launches three background python3 processes running mhddos start.py in UDP/TCP/GET modes against 103.118.252.21, weaponizing the installer host as a DDoS participant. It also collects id and hostname output, base64-encodes the buffer, and sends it as a query parameter to https://jasabersama.id/portfolio-data.php with TLS verification disabled.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for @years19/n8n-nodes-utils-helper-n (version 1.0.0).
If you installed it — respond
Remove @years19/n8n-nodes-utils-helper-n 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.
Did it already run?
If @years19/n8n-nodes-utils-helper-n 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
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks @years19/n8n-nodes-utils-helper-n-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.