uncrypt

GHSA-qx28-hgj2-5h9g

Malicious code in uncrypt (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 0.1.0`

## Source: kam193 (f391bbd6f86e9108de1a5de9d0131658bf5a637b768f724f536976e125d5b0c2)
During import, the package silently starts the embedded executable which existence is not disclosed to the user. Dynamic analysis suggests the code harvests browser data and communicates with an external domain.


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


Campaign: 2026-08-uncrypt


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.


 - obfuscation


 - exfiltration-browser-data


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

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/de87fddd98fc30ef41810cb2e8577085f40c5e01/osv/malicious/pypi/uncrypt/MAL-2026-13380.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/uncrypt
- https://github.com/ossf/malicious-packages/blob/de87fddd98fc30ef41810cb2e8577085f40c5e01/osv/malicious/pypi/uncrypt/MAL-2026-13380.json
- https://tria.ge/260805-scwkeaan2x
- https://www.virustotal.com/gui/file/9d48d08eec66438969bb580ddaed8b329e10df75a63aacb3257f2464bf6f89bd/detection
- https://www.virustotal.com/gui/file/d1fbef0e9364f498b25ecd3e5c6adc34ac5d643ec3180753efc48379f4cc5a1f/detection
- https://github.com/ossf/malicious-packages/blob/68cf7a3b6f0c88b0fcc9bc8f16049010a1bbceb8/osv/malicious/pypi/uncrypt/MAL-2026-13380.json
- https://pypi.org/project/uncrypt/0.1.0
- https://pypi.org/project/uncrypt/0.1.1

Compromised versions (1)

= 0.1.0

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