atlasora-clientnpm
Advisory published Updated
atlasora-client is a confirmed malicious npm package (MAL-2026-6238) 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-client (npm)
What this malware does
package.json declares "postinstall": "node install.js", which runs automatically on npm install. install.js requires https, fs, os, and child_process; collects host identifiers via os.hostname() and os.userInfo(); invokes execSync() to gather additional system data; checks for sensitive files via fs.existsSync(); and POSTs the collected data over an https.request() to a hardcoded remote endpoint. This is the canonical install-time system-information exfiltration shape: any developer or CI machine that runs npm install atlasora-client will silently leak host identity, user account info, and reconnaissance data about local filesystem contents to an attacker-controlled destination.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for atlasora-client (version 1.0.0).
If you installed it — respond
atlasora-client 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-client 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-client-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.