autobahn-electron-probenpm
Advisory published Updated
autobahn-electron-probe is a confirmed malicious npm package (MAL-2026-15589) that steals credentials and exfiltrates sensitive data (malicious versions 99.99.1, 99.99.2, 99.99.3). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in autobahn-electron-probe (npm)
What this malware does
package.json declares preinstall and postinstall lifecycle scripts that run curl against http://da9ohqqvbsgu1166tuu0rrroxsztr18dt.cyowl.com/autobahn-electron-probe/, sending the installer's username (whoami), hostname, current working directory, and a timestamp as query parameters over plain HTTP. The long unique subdomain under cyowl.com is a DNS-callback / OAST-style exfiltration pattern. The scripts fire automatically on npm install without any user action, and the package ships no functional module code — the lifecycle beacon is the entire payload. The package name resembles the Autobahn WebSocket project and Electron, but the shipped contents perform only host reconnaissance and beaconing.
The OpenSSF Package Analysis project identified 'autobahn-electron-probe' @ 99.99.1 (npm) as malicious.
It is considered malicious because:
- The package executes one or more commands associated with malicious behavior.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for autobahn-electron-probe (3 malicious versions).
If you installed it — respond
autobahn-electron-probe 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 autobahn-electron-probe 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
- OpenSSF: Package Analysis · finder
Detect & block this
O3 blocks autobahn-electron-probe-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.