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Malicious code in houdus (PyPI)

Malware Published Sep 5, 2026 to the GitHub Advisory Database • Updated Sep 6, 2026

Package

pip houdus (pip)

Affected versions

= 1.0.0
= 1.0.1

Patched versions

None

Description

Source: kam193 (94c533504ec9815f9ba159827d0c7516c779d03d31fc3ac897317fdbc14c2805)

During import, package loads code disguised as ".wav" file. It performs extensive fingerprinting against sandboxes, and finally downloads and executes heavily obfuscated code. The remote code tries once more to avoid sandbox execution, establishes persistence via scheduled tasks and executes shellcode. Malicious code targets only Windows.

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

Campaign: 2026-09-houdus

Reasons (based on the campaign):

  • obfuscation

  • Downloads and executes a remote malicious script.

  • The package contains code to detect if it is running in a sandbox environment.

  • persistence

  • shellcode

Credit: OpenSSF (source)

References

Published to the GitHub Advisory Database Sep 5, 2026
Reviewed Sep 5, 2026
Last updated Sep 6, 2026

EPSS score

Weaknesses

Embedded Malicious Code

The product contains code that appears to be malicious in nature. Learn more on MITRE.

GHSA ID

GHSA-frjq-w86w-r3gr

Source code

No known source code
Improvements are not currently accepted on this advisory because this package is malware and has no patched versions. If there is something to change, please open an issue at https://github.com/github/advisory-database/issues.