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Malicious package

rizco09PyPI

Malicious code in rizco09 (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2025-191659
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall rizco09

What this malware does

Packages that either reports home installation, simulate malicious activity or imitate Roblox API wrapper.

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: 2025-10-wangzhou183

Reasons (based on the campaign):

  • The package overrides the install command in setup.py to execute malicious code during installation.

Malicious versions

1 flagged
0.1.0

Indicators of compromise (SHA-256)

986983be9ca12edf694072a00cce63fca93a6cacce526937e3a5d3841e87c11e
90119b923a3dc7502487c0d53594922829471c30aae25dde34eee54ab5027cd3
6d76674451d8020f28e8d4421ba6ab31dc05411a8f252fd9ee14aaeed0fa758d
3bfeafc9c42583f06eeca54d2a8004956b1f0f8aafcfd25b2c8fa88bfb815546

Detection & response playbook

Malicious package
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for rizco09 (version 0.1.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging rizco09 across your stack and pipelines.

  2. If you installed it — respond

    Remove rizco09 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.

  3. Did it already run?

    If rizco09 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.

  4. How O3 protects you

    O3 blocks rizco09 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

No. rizco09 on PyPI has been identified as a malicious package (version 0.1.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-056352025-10-wangzhou183RLUA-2026-00724

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

O3 blocks rizco09-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.

rizco09 (PyPI) malicious package — MAL-2025-191659 | O3 Security