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Malicious package

testpackageroietest2PyPI

Advisory published Updated

testpackageroietest2 is a confirmed malicious PyPI package (MAL-2025-41775) that steals credentials and exfiltrates sensitive data (malicious version 0.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in testpackageroietest2 (PyPI)

MAL-2025-41775
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall testpackageroietest2

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
0.0.1

Indicators of compromise (SHA-256)

5d6280bafd371680c1e4527f6b8cb8cc2ca15ba79a4972c50e57251e00b5bf11
4fac6ea416efdbdd66fdb6ce65d38b0f9d865821c5010df81da5b94e82fb2f49
540d9028178695a791b307758df0ac5dca1f6c77f19e12579e4b0745580f358d
f20f64c0ca3c64dbc9462db2d81e5b6e4215f48bd09d2582fbc7bee3a887ecae
0bfe4b80c6d7a40761bf2283c7c12464a5b732580ba3e18bb9691ce2dbb2a8b1

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for testpackageroietest2 (version 0.0.1).

  2. If you installed it — respond

    testpackageroietest2 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 testpackageroietest2 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. testpackageroietest2 on PyPI has been identified as a malicious package (version 0.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-04273GENERIC-standard-pypi-install-pentestRLUA-2026-00809

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

O3 blocks testpackageroietest2-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

testpackageroietest2 (PyPI) malicious package — MAL-2025-41775 | O3 Security