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Malicious package

wei516-ppaPyPI

Malicious code in wei516-ppa (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2025-191930
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall wei516-ppa

What this malware does

Package seems to provide an MCP server, but in fact contains attempts to make an LLM agent break safeguards. As the request is about leaves just a flag, it seems to be research.

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: 2025-11-wayspirit

Reasons (based on the campaign):

  • llm-threat

Malicious versions

2 flagged
0.1.20.1.3

Indicators of compromise (SHA-256)

0d0a2eab49544ee505026ac4302dc256005862e44093c04ec297a085a0d07c2a
1d5a85017b397970606b9d2d5150a6f6ee8f71fdbd810fe6b0a8f34c577d76d1
6f56559a9539b25226a5263de04d9920d7a7427df9076e28e8324a02b17610f8

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 wei516-ppa (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging wei516-ppa across your stack and pipelines.

  2. If you installed it — respond

    Remove wei516-ppa 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 wei516-ppa 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 wei516-ppa 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. wei516-ppa on PyPI has been identified as a malicious package (versions 0.1.2, 0.1.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2025-11-wayspirit

References

Credits

  • Kamil Mańkowski (kam193)

Detect & block this

O3 blocks wei516-ppa-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.

wei516-ppa (PyPI) malicious package — MAL-2025-191930 | O3 Security