# MAL-2026-17200: Malicious code in aseity (PyPI)


- **Type:** Malicious package
- **Package:** `aseity` (PyPI)
- **Published:** 27 Sep 2026

## What is MAL-2026-17200?

MAL-2026-17200 is a malicious package in aseity, published on 27 Sep 2026. 

### Official description

setup.py invokes aseity.compat._ensure_compat, which base64+zlib-decodes the DATA constant shipped in aseity/_shimdata.py and passes the resulting Python source to exec(), so the payload runs automatically on `pip install`. aseity/__init__.py runs the same routine, so a bare `import aseity` also triggers it. The decoded stage-1 performs VM and debugger checks, downloads https://thisisafalsepositive.st/cdn/v2/9f4e7a2c1b8d.png (a PNG carrying a ZIP inside its chunks), extracts a bundled python.exe and AppHost/main.py to a temp directory, and launches subprocess.Popen([py, entry, '-u', _USER, '--env', 'EXE', '--tag', 'PyPi']) with Windows creationflags DETACHED_PROCESS | CREATE_NO_WINDOW (0x00000008 | 0x08000000). A hardcoded per-victim UUID (_USER='e00db386-ab62-4dc1-91fd-21ef9ff3e6ef') is passed to the second stage. The domain thisisafalsepositive.st is not associated with any declared publisher, the delivered bytes are opaque, the payload is hidden as an encoded blob in a data-named module, and the launcher deliberately detaches with no visible window — the shape of a supply-chain dropper deploying a persistent second-stage implant on the installer's host.

During installation, obfuscated code is used to fetch code hidden in an image containing a Python application with a native extension module. This module holds an obfuscated infostealer which collects sensitive data and exfiltrates them to a C2 server retrieved from transaction history in the Polygon blockchain.

---

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

Campaign: 2026-09-donutautosellsrc

Reasons (based on the campaign):

 - infostealer

 - Downloads and executes a remote executable.

 - obfuscation

 - malware

 - native-extension

 - steganography

 - c2-in-blockchain

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

## What should I do about MAL-2026-17200?

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

## Fix prompt for AI coding agents

```text
MAL-2026-17200 is a malicious package: aseity (PyPI). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-17200/ (Markdown: https://insights.sbomify.com/MAL-2026-17200/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-17200

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-17200/
Summaries are generated and may contain mistakes; the official description above is the record.