stillm4ddpocs-rtest-alphanpm
Advisory published Updated
stillm4ddpocs-rtest-alpha is a confirmed malicious npm package (MAL-2026-14377) that executes malicious code on install (malicious versions 999.9.9, 999.9.10). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in stillm4ddpocs-rtest-alpha (npm)
What this malware does
package.json declares a preinstall hook that runs index.js on npm install. index.js collects the installer's local IPv4, public IP (via https://api.ipify.org, https://icanhazip.com, https://ifconfig.me), DNS-resolver IP, hostname, OS username, home directory, cwd, and the parent project's package.json name/author/repository/homepage, then transmits the JSON to the hardcoded callback da51rv0hb2uc72tg4gvgdepinjcallbk1.oast.fun via three channels: HTTP POST on:80, HTTPS POST on:443, and DNS TXT queries whose labels carry the hex-encoded payload split into 60-character chunks. The DNS covert channel and hex chunking are structured to bypass egress filtering that blocks outbound HTTP. The package's self-description as 'authorised security research' does not gate execution; any project that resolves this name at install time transmits the data without consent. The 999.9.9 version and lure name are consistent with a dependency-confusion probe.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for stillm4ddpocs-rtest-alpha (2 malicious versions).
If you installed it — respond
Remove stillm4ddpocs-rtest-alpha 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 stillm4ddpocs-rtest-alpha 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 stillm4ddpocs-rtest-alpha-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.