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Malicious package

my-first-pypi-demoPyPI

Malicious code in my-first-pypi-demo (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2025-191651
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall my-first-pypi-demo

What this malware does

Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.

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: GENERIC-standard-pypi-install-pentest

Reasons (based on the campaign):

  • The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

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

Malicious versions

4 flagged
0.0.10.0.20.0.30.0.4

Indicators of compromise (SHA-256)

b75c5a6d41769cadde9f279da0cd7eacb4e61ffac9e11a8343c01d6c6c4dd103
e3ccc59ce3b3f0670ad2c04524e962d6a43f562433b082fc808db1fadb41c87d
f789a8192ed7a62a0fa9327e495ac8ca2658ff556673ca8d207f7954204ec160
828df3441db1954c300016f9af096196472db8754efa2f716f9cfe28f219144f
0815a9846194ee85f084fcc59c9fbcf6157f4d1453bdda05535a73e9d23a347f

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for my-first-pypi-demo (4 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging my-first-pypi-demo across your stack and pipelines.

  2. If you installed it — respond

    my-first-pypi-demo 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.

  3. Did it already run?

    If my-first-pypi-demo 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 my-first-pypi-demo 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. my-first-pypi-demo on PyPI has been identified as a malicious package (versions 0.0.1, 0.0.2, 0.0.3, 0.0.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-05623GENERIC-standard-pypi-install-pentestRLUA-2026-00546

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

O3 blocks my-first-pypi-demo-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

my-first-pypi-demo (PyPI) malicious package — MAL-2025-191651 | O3 Security