Xrous.rar -

A file ending in .rar is a file. It is a proprietary format used for:

This filename does not match a known software package, documented malware campaign, or prominent digital archive. If you have encountered this file, it is highly likely to be a custom archive or potentially part of a specific localized context. General Technical Background on .RAR Files xROUS.rar

Protecting contents with AES-128 or higher bit encryption and password protection. A file ending in

Could you provide on where you found this file or what you believe its contents might be? documented malware campaign

Splitting large datasets into multiple smaller segments (e.g., .r00 , .r01 ) for easier downloading.