cubesat-upstream-driverPyPI
Advisory published Updated
cubesat-upstream-driver is a confirmed malicious PyPI package (MAL-2026-13666) that steals credentials and exfiltrates sensitive data (malicious version 1.0.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in cubesat-upstream-driver (PyPI)
What this malware does
The package is advertised as an 'Upstream driver interface for cubesat orbital command bus' but ships no driver, protocol, or telemetry code. Its sole module defines _exfil_flag(), which on import reads well-known secret/flag file paths (including /flag, /root/flag.txt, and /**/flag* globs), scans os.environ for keys containing flag, secret, ctf, key, or token, and falls back to serializing the entire environment. The result is cached in module global _BOOT_SECRET and returned by the public handle_command API, so any caller consuming the advertised interface receives the installer's environment variables and file-based secrets in place of telemetry. handle_command also re-runs the harvest on each invocation.
Package appears to abuse PyPI for a CTF-like exercise. It can collect up to all environment variables. The package does not exfiltrate them on its own, suggesting there is another external trigger for that.
Originally detected by Aikido.
Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.
Campaign: 2026-08-cubesat-upstream-driver
Reasons (based on the campaign):
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dependency-confusion
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other
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for cubesat-upstream-driver (version 1.0.1).
If you installed it — respond
cubesat-upstream-driver 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 cubesat-upstream-driver 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
- Kamil Mańkowski (kam193) · reporter
Detect & block this
O3 blocks cubesat-upstream-driver-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.