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Malicious package

mnolithPyPI

Malicious code in mnolith (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2024-11635
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall mnolith

What this malware does

A campaign of probably pentest packages flooding PYPI. Installing the package or importing the module triggers reporting basic info like hostname, path and the username to the package author. There is no other purpose of the package.

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: 2024-11-byted-dast

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.

  • typosquatting

  • dependency-confusion

Malicious versions

1 flagged
912.6

Indicators of compromise (SHA-256)

78a7547feb8bd55e8fc152098e10fe663e89ec42d9f2eeda3c2cadb02350fdb2
561d040b746f575408a1fd9f3d167c7678e07f90373d96e400202e08abecda4c
207bbf082f73c1f6a049ee32f8cc0c74e31ea20c858caf879db53107132b9c4d
12abf54f478de07498cd9e402acab23733627cc88eb5b0d994163e04a255dd6f
48a86141ef76b5d9e3a8c8349aba5a511c3b8b0f6e4e04f69fe78c1efe14fa3a

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 mnolith (version 912.6). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging mnolith across your stack and pipelines.

  2. If you installed it — respond

    mnolith 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 mnolith 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 mnolith 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. mnolith on PyPI has been identified as a malicious package (version 912.6 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2024-110912024-11-byted-dastRLUA-2026-00530

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

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

mnolith (PyPI) malicious package — MAL-2024-11635 | O3 Security