"RAR" is a file format used for data compression and archiving. Without further context, such as the source of the file or the context in which it was mentioned, it is not possible to identify its contents.
If you can provide that context, I can give you more specific advice on what it might be. kigetevu.rar
It is highly recommended to a RAR file unless you know exactly what it is and trust the source. "RAR" is a file format used for data