MAL-2026-5812 Malicious code in hello-test-s1 (PyPI)

Malicious package Published
Package
hello-test-s1
Registry
PyPI

What is MAL-2026-5812?

MAL-2026-5812 is a malicious package in hello-test-s1, published on 15 Jun 2026.

Official description

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

During installation or importing the module, the package starts a reverse shell to hardcoded locatiom


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

Campaign: 2025-12-aiogram-sever-patch

Reasons (based on the campaign):

  • The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.

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

  • dependency-confusion

What should I do about MAL-2026-5812?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

Sources

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