qzc690384

GHSA-c8hx-79hf-pwfm

Malicious code in qzc690384 (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 1.0.0`

## Source: kam193 (dbd73fb476a20a6d0f4bc4fe820a007283789e6c03548f93e67fff7a58b2ede1)
In this campaign, packages execute malicious code during installation. The exact behavior varies between versions: fingerprinting environment, exposing a backdoor server listening for remote commands, downloading remote commands from a hardcoded location. Next stages seem to be downloaded from localhost, what suggests the code may still be a preparation for the real attack.


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


Campaign: 2026-11-qzc


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.


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


 - backdoor


 - The package overrides the install command in setup.py to execute malicious code during installation.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/e3cb1fb7f7c3ea7aac52daa1e388c7ac2249f67e/osv/malicious/pypi/qzc690384/MAL-2026-18752.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/qzc690384
- https://github.com/ossf/malicious-packages/blob/e3cb1fb7f7c3ea7aac52daa1e388c7ac2249f67e/osv/malicious/pypi/qzc690384/MAL-2026-18752.json
- https://github.com/ossf/malicious-packages/blob/d7d569fb443d44db44ee0cf66793ac2206e0a129/osv/malicious/pypi/qzc690384/MAL-2026-18752.json
- https://pypi.org/project/qzc690384/1.0.0
- https://github.com/advisories/GHSA-c8hx-79hf-pwfm

Compromised versions (1)

= 1.0.0

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