BumbleBee msimg32.dll gibberish PE metadata builder pattern

Emiliano Mema@Nosalva

•updated Aug 18, 2026•0•0•4

This rule detects potential Bumblebee loader activity by identifying files named 'msimg32.dll' that possess specific known builder file versions and exhibit anomalous, dictionary-derived 'gibberish' entries within their PE version information metadata fields (Comments, CompanyName, or FileDescription).