A RAR file (Roshal Archive) is a proprietary data container that uses advanced compression to bundle multiple files into one smaller package.

: It natively supports password protection and AES-256 encryption.

If you have encountered this file and are unsure of its origin, follow these steps: How to Open RAR Files on Windows, Mac, and Mobile - Avast

: Malicious actors often use short, alphanumeric names like "22d" for RAR archives containing harmful scripts (like .bat or .exe files) to bypass basic email filters.