What does the zakuchienne malware do?

Importing the module starts an infostealer Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers. Campaign: 2025-11-mescouilles Reasons (based on the campaign): - infostealer - infostealer:kiwi - infostealer:cstealer - exfiltration-generic - exfiltration-browser-data - exfiltration-credentials - files-exfiltration - The package contains code to detect if it is running in a sandbox environment.

Which versions of zakuchienne are malicious?

The following PyPI versions of zakuchienne are flagged malicious: 0.0.1. Treat any of these as compromised.

How do I remediate zakuchienne if I installed it?

zakuchienne 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 zakuchienne — how do I know if it already compromised me?

If zakuchienne 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 zakuchienne part of a known attack campaign?

Yes — zakuchienne is associated with the 2025-11-mescouilles, RLMA-2025-06600, RLUA-2026-00945 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 zakuchienne across my projects, lockfiles, and CI pipelines?

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

Part of a larger attack: 2025-11-mescouilles published 10 malicious packages. See the full campaign →

Malicious package

zakuchiennePyPI

Advisory published Nov 24, 2025Updated Mar 19, 2026

zakuchienne is a confirmed malicious PyPI package (MAL-2025-191940) 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 zakuchienne (PyPI)

MAL-2025-191940

Immediate action

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

pip uninstall zakuchienne

What this malware does

Importing the module starts an infostealer

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2025-11-mescouilles

Reasons (based on the campaign):

infostealer
infostealer:kiwi
infostealer:cstealer
exfiltration-generic
exfiltration-browser-data
exfiltration-credentials
files-exfiltration
The package contains code to detect if it is running in a sandbox environment.

Malicious versions

1 flagged

0.0.1

Indicators of compromise (SHA-256)

f3802d32d5b739ad0b12d4d076140e8251213f97115c2de925af6a9443ca95a1

6cab2f6ce1c1eec52747b1f7057550b9b35d3c4f6d8c04b51e37afd47c1e5625

a552f3c484f760a67bb58d8fc1707cb688cd10385bbe9894f138da6b15c24646

564f080ef23b5bb7ce02eaac6ac9b4cfd2ab06f572abb3462cb142e7b215d5a4

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for zakuchienne (version 0.0.1).
If you installed it — respond
zakuchienne 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 zakuchienne 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. zakuchienne 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

2025-11-mescouillesRLMA-2025-06600RLUA-2026-00945

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193)
ReversingLabs · finder

Detect & block this

O3 blocks zakuchienne-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