Stealerium targets Chromium-based and Gecko-based web browsers. It locates the local SQLite databases holding stored passwords, autofill data, credit card information, and active session cookies. Because session cookies allow attackers to bypass Multi-Factor Authentication (MFA), this is a highly damaging vector.
Compressed archives like .rar and .zip are favored by threat actors for several critical reasons: Stealerium.rar
Below is a structured research paper outlining the technical mechanics, delivery vectors, and defensive strategies surrounding files like Stealerium.rar . Research Paper: Technical Analysis of Stealerium Malware credit card information