Malicious code in qzc690382 (PyPI)

---

__

Source: amazon-inspector (b34d702840be6773d3d41444f836f45dab6a8e3524fcc8e4cd6d224ac3a77f1e)

The package body is inert (__init__.py contains only #c\n); the entire functionality lives in setup.py, which runs on pip install. During install, setup.py writes a Python HTTP server script to /tmp/.kxs and launches it detached via subprocess.Popen([sys.executable, '/tmp/.kxs'], start_new_session=True). The server binds 0.0.0.0 on ports 9998, 9999, 8089, 8099, and 8899 and executes any shell command passed in a GET c= query parameter via subprocess.run(c, shell=True,...), gated only by a token stored at /tmp/.kxq. The result is a persistent, network-exposed shell on all interfaces of the installing machine, running as the installing user, with no relationship to building or using any advertised functionality.

Source: kam193 (dbcf75de5bd0a526e2aad408ec7999bd29b6648a527662b01405279824f7939a)

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.

---

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.