---
id: MAL-2026-14401
title: Malicious code in multyproccess (PyPI)
summary: Malicious code in multyproccess (PyPI)
severity: none
vendor: multyproccess
product: multyproccess
ecosystem: pip
affected:
  - multyproccess
published: '2026-08-24'
updated: '2026-08-24'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/MAL-2026-14401'
references:
  - url: 'https://bad-packages.kam193.eu/pypi/package/multyproccess'
  - url: 'https://pypi.org/project/multyproccess/2.32.5/'
  - url: 'https://pypi.org/project/multyproccess/2.32.3/'
  - url: 'https://pypi.org/project/multyproccess/2.32.6/'
  - url: 'https://pypi.org/project/multyproccess/2.32.4/'
tags:
  - osv
  - pip
ingestedAt: '2026-08-24T19:25:44.570Z'
---

## Overview


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_-= Per source details. Do not edit below this line.=-_

## Source: amazon-inspector (7938a109a642dfe8b161e9568d6373a038c3413c0fd1f2b01702f4f173348553)
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.

## Source: kam193 (93a751dcfb2e5ac6058cbd62220d237288d3ceb4d8fe152b7ef7babb645df660)
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


## Affected packages

- `multyproccess`

## Remediation

Refer to the advisory for the patched release.