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Malicious package

rtxt-dep3PyPI

Malicious code in rtxt-dep3 (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2025-41755
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall rtxt-dep3

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
3.3.7

Indicators of compromise (SHA-256)

6bb8cf9565491216972397193b19116a7d443f32ae4680722f8c259abd60611c
72cd069f18d09ad432d06e3ef414186794031c4d5856346d49b480ad4adb5302
c9452c218f473489657ae73882d2b63b23ea6349c2d4da8bf5fe393f9ef69bbf
d8dd6cf72aea24d8c771e739fcef15a3f1738ffdfefcd04a7cc0a4c45e049717
b8314e14047b65604b20626eec1c14be2ce3e2aa7073bc45f35d022d423e926b

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for rtxt-dep3 (version 3.3.7). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging rtxt-dep3 across your stack and pipelines.

  2. If you installed it — respond

    rtxt-dep3 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 rtxt-dep3 was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks rtxt-dep3 before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. rtxt-dep3 on PyPI has been identified as a malicious package (version 3.3.7 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-04250GENERIC-standard-pypi-install-pentestRLUA-2026-00736

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

O3 blocks rtxt-dep3-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

rtxt-dep3 (PyPI) malicious package — MAL-2025-41755 | O3 Security