Here is what I can tell you about managing a .rar file like "isus.rar":
"ISUS" sometimes refers to "InstallShield Update Service." isus.rar
did you find "isus.rar" (e.g., inside a software folder, email attachment)? Here is what I can tell you about managing a
To give you the exact "feature" or information you need, could you tell me: inside a software folder
You will need archive software like WinRAR or 7-Zip to look at the contents of a .rar file.
If this file was unexpected, downloaded from an untrusted source, or arrived via email, it is highly recommended to scan it with an antivirus program before opening it.