atlasora-sharednpm
Advisory published Updated
atlasora-shared is a confirmed malicious npm package (MAL-2026-6241) 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-shared (npm)
What this malware does
package.json declares "postinstall": "node install.js", causing install.js to run automatically on npm install. install.js requires https, fs, os, and child_process, collects host identifiers via os.hostname() and os.userInfo(), executes shell commands via execSync(...), probes filesystem paths with fs.existsSync(...), and POSTs the collected data to a remote endpoint via https.request(...). This is the canonical install-time system-information exfiltration pattern: identifying data is gathered from the installer's machine and beaconed outbound on every install, with no documented purpose tied to the package's stated function. Installing this package automatically leaks host and user information to an external destination.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for atlasora-shared (version 1.0.0).
If you installed it — respond
atlasora-shared 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-shared 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-shared-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.