{"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","slug":"MAL-2026-14401","body":"## Overview\n\n\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (7938a109a642dfe8b161e9568d6373a038c3413c0fd1f2b01702f4f173348553)\nThe 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.\n\n## Source: kam193 (93a751dcfb2e5ac6058cbd62220d237288d3ceb4d8fe152b7ef7babb645df660)\nDuring installation, package executes an infostealer that e.g. exfiltrates browsers and crypto wallets data, establishes persistence, monitors clipboard.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-08-multyproccess\n\n\nReasons (based on the campaign):\n\n\n - typosquatting\n\n\n - infostealer\n\n\n - exfiltration-crypto\n\n\n - exfiltration-browser-data\n\n\n - clones-real-package\n\n\n - The package overrides the install command in setup.py to execute malicious code during installation.\n\n\n - The package contains code to detect if it is running in a sandbox environment.\n\n\n - obfuscation\n\n\n - persistence\n\n\n## Affected packages\n\n- `multyproccess`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}