MAL-2026-375 Malicious code in spellcheckerpy (PyPI)

Packages contain hidden code that is effectively run during importing or using the library, and downloads second stage code. Then, a process running in background periodically connects to a remote host and waits for the next code to execute.

The malicious code was in version 1.3.0, but the package itself was clearly uploaded with malclious intentions.

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

Campaign: 2025-11-spellcheckers

Reasons (based on the campaign):

• obfuscation

• Downloads and executes a remote malicious script.

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