add-two-numbers-x7q9mnpm
Advisory published Updated
add-two-numbers-x7q9m is a confirmed malicious npm package (MAL-2026-12032) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 1.0.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in add-two-numbers-x7q9m (npm)
What this malware does
The package advertises itself as a trivial 'add two numbers' utility but its preinstall lifecycle script enumerates the installer's Desktop directory, reads.txt files, applies a regex (/npm_[A-Za-z0-9_-]+/) to extract npm authentication tokens, and transmits any match as a query parameter to the hardcoded endpoint https://lively-bird-15.webhook.cool. This runs automatically on npm install. The behavior has no relation to the package's advertised arithmetic functionality, and the random name suffix is consistent with a disposable malicious-publish account. Harvested npm tokens enable registry account takeover and downstream supply-chain propagation via the victim's publish rights.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for add-two-numbers-x7q9m (2 malicious versions).
If you installed it — respond
add-two-numbers-x7q9m 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 add-two-numbers-x7q9m 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 add-two-numbers-x7q9m-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.