MAL-2026-5776

Dashboard / Malicious Package / MAL-2026-5776

MAL-2026-5776

Summary: Malicious code in fastgptmini (PyPI)

Details: Source: amazon-inspector (4da10d62527ca4b69f4458b6a01c77f01af42c5a1631d5cc6f207070d1ade20d) setup.py fetches an opaque file from https://tmpfiles.org/dl/wJwhUXDhUK6M/zvgfsj.txt (an anonymous, throwaway file-sharing host) during `pip install`, writes the bytes to `python.bat` in the current working directory, and executes them via `os.system("cmd /c python.bat")`. The URL is unpinned, no hash or signature verification is performed, the destination is not associated with the package publisher, and the fetched content is handed directly to a shell — a canonical install-time dropper. The package ships no real functionality (src/ contains only the egg-info directory) and uses placeholder metadata (Name/Author/Summary all set to 'FastGPTMini' with no homepage, URL, or email), consistent with a name-confusion lure targeting developers searching for FastGPT/GPT tooling. Any machine running `pip install FastGPTMini` will fetch and execute attacker-controlled code with the user's privileges. Source: kam193 (3cca907106c3dceb5276e9bdbf8799367b44df9e12fe12098dd3ed215bb4f3b0) During installation, the code downloads an obfuscated script, which attempts to tamper with Defender exclusions paths and then downloads a malicious executable Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers. Campaign: 2026-06-fastgptmini Reasons (based on the campaign): - Downloads and executes a remote executable. - malware - The package overrides the install command in setup.py to execute malicious code during installation. - obfuscation

References: https://www.virustotal.com/gui/file-analysis/ZjYxZmY4ZjFhNjIxMzI2ZTY1NmUxNThkMWNlYTE0M2M6MTc4MTUyMzQzMw==, https://www.virustotal.com/gui/file/9e731bb85408c1b34c5f7fd6518b3590983ac5e95793dee0f1af390ac288ed47/detection, https://bad-packages.kam193.eu/pypi/package/fastgptmini, https://pypi.org/project/FastGPTMini/2.22/, https://pypi.org/project/FastGPTMini/2.26/, https://pypi.org/project/FastGPTMini/2.23/, https://pypi.org/project/FastGPTMini/2.21/