Executable Installer with Weak File Permission Exploit

Darshan Thummar@Mighty

•updated Jun 11, 2026•0•0•4

This rule detects the download of executable installer files (MSI or EXE) over HTTP that are larger than 500KB and contain the 'MZ' header, which is characteristic of Windows executables. The rule specifically looks for these files being delivered to a client within the home network. The message indicates a potential 'Executable Installer with Weak File Permission Exploit', suggesting that the downloaded file might be malicious or used in an exploit chain related to weak file permissions.