Which versions of pyyal are malicious?

The following PyPI versions of pyyal are flagged malicious: 94.6. Treat any of these as compromised.

How do I remediate pyyal if I installed it?

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

If pyyal 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 pyyal part of a known attack campaign?

Yes — pyyal is associated with the 2024-11-byted-dast 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 pyyal across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for pyyal (version 94.6).

Part of a larger attack: 2024-11-byted-dast published 183 malicious packages. See the full campaign →

Malicious package

pyyalPyPI

Advisory published Nov 6, 2024Updated Dec 12, 2025

pyyal is a confirmed malicious PyPI package (MAL-2024-10646) that steals credentials and exfiltrates sensitive data (malicious version 94.6). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in pyyal (PyPI)

MAL-2024-10646

Immediate action

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

pip uninstall pyyal

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

The OpenSSF Package Analysis project identified 'pyyal' @ 94.6 (pypi) as malicious.

It is considered malicious because:

The package communicates with a domain associated with malicious activity.

Malicious versions

1 flagged

94.6

Indicators of compromise (SHA-256)

aefb518974135eb466833c5ca5eba8804ce30a3771fb23eb70a4cab52747e544

90fe0f11c862b8e01ae2f2c40b4f59ba5af374816d6f7ecb36c450f1f5fefdf8

85587f160dc4e7bcc19305fd294a77bf8256a3efb5e70b8ec84c94994edfb2a5

cf2f052953a644525907ca6a3800679a378b82cc28878ec09e05253651dc58db

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for pyyal (version 94.6).
If you installed it — respond
pyyal 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 pyyal 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. pyyal on PyPI has been identified as a malicious package (version 94.6 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2024-11-byted-dast

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193)
OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks pyyal-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