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Malicious package

weorewfoi2393PyPI

Advisory published Updated

weorewfoi2393 is a confirmed malicious PyPI package (MAL-2025-192993) that executes malicious code on install (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in weorewfoi2393 (PyPI)

MAL-2025-192993
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall weorewfoi2393

What this malware does

Package tests possible malicious actions during installation by starting notepad. There is no other functionality, it's clearly a test of possible malicious actions.

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-simple-tests

Reasons (based on the campaign):

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

Malicious versions

1 flagged
1.0.0

Indicators of compromise (SHA-256)

00296490bb9bcec28af256a76790f8c5f96dd45d4184ac6617bbdffad3e674a3

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for weorewfoi2393 (version 1.0.0).

  2. If you installed it — respond

    Remove weorewfoi2393 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 weorewfoi2393 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

No. weorewfoi2393 on PyPI has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GENERIC-simple-tests

References

Credits

  • Kamil Mańkowski (kam193) · analyst

Detect & block this

O3 blocks weorewfoi2393-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.

Explore

weorewfoi2393 (PyPI) malicious package — MAL-2025-192993 | O3 Security