# MAL-2026-14401: Malicious code in multyproccess (PyPI)


- **Type:** Malicious package
- **Package:** `multyproccess` (PyPI)
- **Published:** 24 Aug 2026

## What is MAL-2026-14401?

MAL-2026-14401 is a malicious package in multyproccess, published on 24 Aug 2026. 

### Official description

The package's setup.py overrides the install and develop cmdclass to base64-decode a bundled request/.payload file and launch it via subprocess.Popen([sys.executable, '-c', payload],...) with DETACHED_PROCESS|CREATE_NO_WINDOW at pip install time. The decoded payload is a Windows infostealer that enumerates Chrome/Edge/Brave/Opera/Vivaldi/Firefox profiles (cookies, logins, key4.db, autofill, saved cards), 50+ crypto wallet browser extensions and standalone wallet apps (Electrum, Binance, Ethereum), clipboard contents, email/FTP client credentials, and system fingerprint data, advertising a Chrome v20 ABE bypass. Collected data is exfiltrated to api.telegram.org/bot<TOKEN>/sendMessage and /sendDocument, and to https://recloud-blush.vercel.app; ipinfo.io is queried for geolocation. The payload also installs boot persistence disguised as svchost.exe, performs periodic screenshotting when crypto apps are active, targeted keylogging for passwords/seeds/private keys, and maintains a real-time C2 channel. The package name typosquats 'multiprocessing' while its metadata forges the publisher identity as 'Python Software Foundation' (python-dev@python.org, github.com/psf/request) and request/__init__.py re-exports symbols from the real requests library as a cover story.

During installation, package executes an infostealer that e.g. exfiltrates browsers and crypto wallets data, establishes persistence, monitors clipboard.

---

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

Campaign: 2026-08-multyproccess

Reasons (based on the campaign):

 - typosquatting

 - infostealer

 - exfiltration-crypto

 - exfiltration-browser-data

 - clones-real-package

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

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

 - obfuscation

 - persistence

## What should I do about MAL-2026-14401?

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-2026-14401 is a malicious package: multyproccess (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-2026-14401/ (Markdown: https://insights.sbomify.com/MAL-2026-14401/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-14401

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-14401/
Summaries are generated and may contain mistakes; the official description above is the record.