Which versions of wr-test are malicious?

The following PyPI versions of wr-test are flagged malicious: 100.1337, 101.1337. Treat any of these as compromised.

How do I remediate wr-test if I installed it?

wr-test 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 wr-test — how do I know if it already compromised me?

If wr-test 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 wr-test part of a known attack campaign?

Yes — wr-test is associated with the RLMA-2025-00549, GENERIC-standard-pypi-install-pentest, RLUA-2026-00935 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 wr-test across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for wr-test (2 malicious versions).

Malicious package

wr-testPyPI

Advisory published Jul 26, 2024Updated Mar 19, 2026

wr-test is a confirmed malicious PyPI package (MAL-2025-1008) that steals credentials and exfiltrates sensitive data (malicious versions 100.1337, 101.1337). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in wr-test (PyPI)

MAL-2025-1008

Immediate action

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

pip uninstall wr-test

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

2 flagged

100.1337101.1337

Indicators of compromise (SHA-256)

0f881f015eb09cdd8461fccdfca701638e1e39b121eb08d119c1b0a712965355

0226ba113a95eba5c5935a4c65548e0441a4ff9385d42362c54d871f397713fa

3e752a2e84135761f1cf5319ed23d3a78b994ea011df850c87938442ad249180

b13d01b97f0197912cf29a7d1f210944139caceda9baa44300aef27ed97d521e

4bc3598747ad0c008d3a5753e061b282d03f93c7969e144b1a8b1303f62fef97

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for wr-test (2 malicious versions).
If you installed it — respond
wr-test 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 wr-test 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. wr-test on PyPI has been identified as a malicious package (versions 100.1337, 101.1337 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-00549GENERIC-standard-pypi-install-pentestRLUA-2026-00935

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193)
ReversingLabs · finder

Detect & block this

O3 blocks wr-test-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