Which versions of anrk are malicious?

The following PyPI versions of anrk are flagged malicious: 0.1.1. Treat any of these as compromised.

How do I remediate anrk if I installed it?

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

If anrk 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 anrk part of a known attack campaign?

Yes — anrk is associated with the RLMA-2025-04743, 2025-08-k7eel, RLUA-2026-00067 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 anrk across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for anrk (version 0.1.1).

Part of a larger attack: 2025-08-k7eel published 31 malicious packages. See the full campaign →

Malicious package

anrkPyPI

Advisory published Aug 23, 2025Updated Mar 19, 2026

anrk is a confirmed malicious PyPI package (MAL-2025-47744) that steals credentials and exfiltrates sensitive data (malicious version 0.1.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in anrk (PyPI)

MAL-2025-47744

Immediate action

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

pip uninstall anrk

What this malware does

Importing the module downloads and executes widely recognized malware

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

Campaign: 2025-08-k7eel

Reasons (based on the campaign):

Downloads and executes a remote executable.
malware

Malicious versions

1 flagged

0.1.1

Indicators of compromise (SHA-256)

b5f1f7dd7d6d956cd9fcef47dbd2b08ade80d6d83efa190bed5a78b116d2d257

dd53505a8bf999b07f9c1ff23277aeb91acb478089292dc25d868dea9d9aa2de

d31b93354ffab349a38deda7660563fa2c08f9b7b1a0c207308962aef1632f7f

961615b8a91a57bda9e46b8203db275e759e4e4ef51e3c95b8b5338aa1b3d2c7

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for anrk (version 0.1.1).
If you installed it — respond
anrk 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 anrk 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. anrk on PyPI has been identified as a malicious package (version 0.1.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-047432025-08-k7eelRLUA-2026-00067

References

Credits

Kamil Mańkowski (kam193)
ReversingLabs · finder

Detect & block this

O3 blocks anrk-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