atlasora-confignpm
Advisory published Updated
atlasora-config is a confirmed malicious npm package (MAL-2026-6239) 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 atlasora-config (npm)
What this malware does
The package declares a postinstall hook in package.json ("postinstall": "node install.js") that auto-executes install.js on every npm install. install.js imports https, fs, os, and child_process; collects host identity via os.hostname() and os.userInfo() (line 16, 18); reads filesystem state with fs.existsSync (lines 53, 62, 83); shells out via execSync (line 77); and POSTs the collected data over an https.request to a remote endpoint (lines 96, 104, 113). The combination of host/user identity collection, filesystem probing, command execution, and outbound HTTPS POST inside a postinstall script is the canonical install-time exfiltration shape. Installing the package causes the installer's machine identity and environment data to be transmitted to a remote endpoint without consent.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for atlasora-config (version 1.0.0).
If you installed it — respond
atlasora-config 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 atlasora-config 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 atlasora-config-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.