Isus.rar -

You will need archive software like WinRAR or 7-Zip to look at the contents of a .rar file.

To give you the exact "feature" or information you need, could you tell me: isus.rar

did you find "isus.rar" (e.g., inside a software folder, email attachment)? You will need archive software like WinRAR or

are you trying to do with it? (e.g., scan it for safety, extract its contents, know what it belongs to)? inside a software folder