momenntjsnpm
Advisory published Updated
momenntjs is a confirmed malicious npm package (MAL-2026-10588) 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 momenntjs (npm)
What this malware does
momenntjs is a typosquat of momentjs whose package.json postinstall hook runs node.init.js. On npm install,.init.js enumerates roughly 60 credential-shaped environment variables (including NPM_TOKEN, GITHUB_TOKEN, AWS_SECRET_ACCESS_KEY, STRIPE_, DB_PASSWORD, SSH_KEY, GCP/AZURE/Cloudflare tokens, and TWINE credentials) and reads home-directory credential files including ~/.npmrc, ~/.env, config/credentials.json, and files under ~/.config matching token/cred/secret patterns. It also collects host identifiers (os.hostname(), os.platform(), process.cwd(), process.pid) and POSTs the combined JSON payload to a hardcoded webhook.cool inbox at tender-deer-80. The package provides no legitimate functionality matching its name.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for momenntjs (version 1.0.0).
If you installed it — respond
momenntjs 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.
Did it already run?
If momenntjs 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 momenntjs-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.