Which versions of basic-arithmetics are malicious?

The following PyPI versions of basic-arithmetics are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate basic-arithmetics if I installed it?

Remove basic-arithmetics 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.

I already installed basic-arithmetics — how do I know if it already compromised me?

If basic-arithmetics 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.

Is basic-arithmetics part of a known attack campaign?

Yes — basic-arithmetics is associated with the GENERIC-simple-tests campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find basic-arithmetics across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for basic-arithmetics (version 1.0.0).

Malicious package

basic-arithmeticsPyPI

Advisory published Aug 23, 2024Updated Mar 17, 2026

basic-arithmetics is a confirmed malicious PyPI package (MAL-2024-12214) 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 basic-arithmetics (PyPI)

MAL-2024-12214

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

pip uninstall basic-arithmetics

What this malware does

Packages that might be part of testing for pentesting / malicious activity / joy, with suspicious activity that does not present any real harm.

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)

0dd77bb2a4ad03b3478bb954065e8fa3a6afb83dda5d68c088f9db7199be1308

a4b7ea06431a2127d9e1dd55c10c2182300c69f49150becb9536a94503acaadc

75423155f8f518e7f8ffc9bba26ceb02d5c76df981037dc6d0804b82f7b52e18

6352dda5a4aaeb793aef7a32d269d89f6bd4d48eb0e186b3bda1a3fffcab179b

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for basic-arithmetics (version 1.0.0).
If you installed it — respond
Remove basic-arithmetics 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 basic-arithmetics 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. basic-arithmetics 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

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193)

Detect & block this

O3 blocks basic-arithmetics-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.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database