# MAL-2026-10576: Malicious code in tennacity (PyPI)


- **Type:** Malicious package
- **Package:** `tennacity` (PyPI)
- **Published:** 14 Jul 2026

## What is MAL-2026-10576?

MAL-2026-10576 is a malicious package in tennacity, published on 14 Jul 2026. 

### Official description

tennacity is a one-character typosquat of the popular 'tenacity' library; its README/PKG-INFO are copied verbatim from real tenacity while setup.py lists placeholder author metadata ('Your Name', your.email@example.com) and a 'prints Hello World on import' description. On import, tennacity/__init__.py branches on OS and CPU architecture to download platform-specific binaries from https://easyswapnow.pro/downloads/lix_amd.bin, lix_arm.bin, mac_amd.bin, mac_arm.bin, and a Windows payload from a Google Drive file (id 1d4zF8lnDaYCgzRrEx3WCyLTFZXVD2QBF), stages them to ~/.local/share/config, /Users/Shared/.local/config, and %TEMP%/t.jse, sets the executable bit, and invokes them via subprocess.run. It then installs login-time persistence: a systemd --user unit at ~/.config/systemd/user/python-script.service (enabled via 'systemctl --user enable --now') on Linux and a LaunchAgent at ~/Library/LaunchAgents/com.user.script.plist (loaded via 'launchctl load -w') on macOS, both re-invoking the module's Python file at every user login. The fetched binaries are unpinned, unverified, and hosted on a non-publisher domain unrelated to the package's stated Hello-World purpose.

The typosquatted package installs a Mythic/Poseidon C2 framework beacon and ensures persistence. After installation, the beacon communicates with C2 on wegoexchange[.]site for further commands.

---

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

Campaign: 2026-07-tennacity

Reasons (based on the campaign):

 - malware

 - Downloads and executes a remote executable.

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

 - typosquatting

 - persistence

## What should I do about MAL-2026-10576?

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-2026-10576 is a malicious package: tennacity (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-2026-10576/ (Markdown: https://insights.sbomify.com/MAL-2026-10576/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-10576

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-10576/
Summaries are generated and may contain mistakes; the official description above is the record.