Which versions of st-py-de-cli are malicious?

The following PyPI versions of st-py-de-cli are flagged malicious: 1.9.9. Treat any of these as compromised.

How do I remediate st-py-de-cli if I installed it?

st-py-de-cli 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.

I already installed st-py-de-cli — how do I know if it already compromised me?

If st-py-de-cli 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 st-py-de-cli part of a known attack campaign?

Yes — st-py-de-cli is associated with the RLMA-2025-04266, GENERIC-standard-pypi-install-pentest, RLUA-2026-00779 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 st-py-de-cli across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for st-py-de-cli (version 1.9.9).

Malicious package

st-py-de-cliPyPI

Advisory published Aug 13, 2025Updated Mar 19, 2026

st-py-de-cli is a confirmed malicious PyPI package (MAL-2025-41768) that steals credentials and exfiltrates sensitive data (malicious version 1.9.9). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in st-py-de-cli (PyPI)

MAL-2025-41768

Immediate action

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

pip uninstall st-py-de-cli

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

1 flagged

1.9.9

Indicators of compromise (SHA-256)

740cd15c46249ef8392ee0768d88189dc3589522b3e7206893d2c56e341652cf

b57204d0121ef56e533345f51682f0baa2f8d976925e7653845009d3454870d0

a0110859887f6cd8d6e81ff1c6715dd4a5d2a1c84c28b71cb09320e33e10cce5

bbb954f7620f2b5375ffd61f8e9af9023afd5e07519da2eb16c20c2ffc56eb7d

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for st-py-de-cli (version 1.9.9).
If you installed it — respond
st-py-de-cli 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.
Did it already run?
If st-py-de-cli 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. st-py-de-cli on PyPI has been identified as a malicious package (version 1.9.9 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-04266GENERIC-standard-pypi-install-pentestRLUA-2026-00779

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193)
ReversingLabs · finder

Detect & block this

O3 blocks st-py-de-cli-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database