trinity-schemenpm
Advisory published Updated
trinity-scheme is a confirmed malicious npm package (MAL-2026-10425) that executes malicious code on install (malicious version 20.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in trinity-scheme (npm)
What this malware does
On npm install, the package's preinstall lifecycle reads a hex-encoded command string from preinstall.json, decodes it via Buffer.from(..., 'hex'), and passes the decoded shell command to child_process.exec. The decoded payload collects the installer's whoami, pwd, and hostname output and POSTs the values to the hardcoded endpoint https://eo7o7j442dx6yl6.m.pipedream.net/. The command is stored in hex form to evade plain-text scanning; the package otherwise provides no functionality consistent with its declared name.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for trinity-scheme (version 20.0.0).
If you installed it — respond
Remove trinity-scheme 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 trinity-scheme 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 trinity-scheme-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.