PirxcyPackagePyPI
Malicious code in pirxcypackage (PyPI) Remove it immediately and rotate any exposed credentials.
What this malware does
PirxcyPackage/init.py fetches https://pastebin.com/raw/91tFF63S and passes the response body to exec() on every import. This is a textbook remote-code-execution supply-chain pattern: the payload is mutable, unauthenticated, unsigned, and controlled by a third-party paste owner, so any installer importing this package runs arbitrary attacker-chosen Python. The staging via Pastebin also ensures static review of the wheel cannot observe actual behavior. Installer harm is direct and unambiguous.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for PirxcyPackage (version 8.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging PirxcyPackage across your stack and pipelines.
If you installed it — respond
Remove PirxcyPackage from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If PirxcyPackage was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks PirxcyPackage before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks PirxcyPackage-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.