uitil

Details

**Severity:** Critical

**Affected versions:** `= 0.1.4`

## Source: kam193 (ff0b75197d8e7cd361d61461260811fba8920c54b8538cb5f21ec2fc1c885ec3)
The package implements an undocumented way to execute code hidden in image files, and a function that searches for images in the current directory and attempts to execute the code. 

It's used in the GitHub repository https://github.com/OR-6/PassCheck/blob/main/main.py#L190 to silently execute the command hidden in the image https://github.com/OR-6/PassCheck/blob/b09b3f1ec5d7345c614b1d956840ee2774f7131b/demo.png  when the user interacts with the repository code. The decrypted command attempted to download and execute code from hxxps://or-6.github[.]io, which at the time of analysis didn't host any code.


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


Campaign: 2026-01-uitil


Reasons (based on the campaign):


 - typosquatting


 - steganography


 - The malicious code is intentionally included in a dependency of the package


 - action-hidden-in-lib-usage


 - The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/uitil/MAL-2026-1036.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/uitil
- https://github.com/OR-6/PassCheck/blob/b09b3f1ec5d7345c614b1d956840ee2774f7131b/demo.png
- https://github.com/OR-6/PassCheck/blob/main/main.py#L190
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/uitil/MAL-2026-1036.json
- https://github.com/advisories/GHSA-293m-rq64-jcfq

Compromised versions (1)

• = 0.1.4

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.