MAL-2026-14308 Malicious code in libasync (PyPI)

The package was found to contain malicious code or consuming dependency that contains malicious code

During import, the code obfuscated in native extension downloads malicious remote executable and establishes persistence via registry keys. Downloaded binary seems to be used for cryptomining.

Attacker infrastructure corresponds with the campaign 2026-07-pyqt6darktheme.

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

Campaign: 2026-08-libasync

Reasons (based on the campaign):

• Downloads and executes a remote executable.

• obfuscation

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

• native-extension

• persistence

• cryptominer