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Malicious package

greensadwayPyPI

Advisory published Updated

greensadway is a confirmed malicious PyPI package (MAL-2025-6519) that steals credentials and exfiltrates sensitive data (malicious version 0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in greensadway (PyPI)

MAL-2025-6519
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall greensadway

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
0.1

Indicators of compromise (SHA-256)

fe716e903530bacd2ccc64e7393d12f0fa9d5d1e1fa1a0869abc22c9fcd95126
6a9700b5beb781c1fa2385b4127fc981ac18e0b2a0a6779752a3b85ebf3a1486
c753b011ebd58b9c724b9078a09aa839bc2267e7828be5e90c1a33d5a4992149
97a46aef581f6d71c0a59cbddecc4c97b795929d391abf8d7ef1f097385095be
dd919c274b0f15686b442accf0e9775accc6a66b659e2dd3de30bae72d7e046b

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for greensadway (version 0.1).

  2. If you installed it — respond

    greensadway 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 greensadway 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. greensadway on PyPI has been identified as a malicious package (version 0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-03610GENERIC-standard-pypi-install-pentestRLUA-2026-00368

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

O3 blocks greensadway-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

greensadway (PyPI) malicious package — MAL-2025-6519 | O3 Security