Look at your browser's download manager ( Ctrl+J in most browsers) to see which website it came from.
Use a reputable tool like Malwarebytes or Windows Security before extracting.
If you found this file on your computer and don't remember downloading it: eys145.rar
To "look into" the file, you need specialized software to decompress the proprietary RAR format.
If the file name was part of a larger set (e.g., eys145.part1.rar ), ensure you have all parts in the same folder before trying to extract. Look at your browser's download manager ( Ctrl+J
If you can tell me or what you expect to be inside , I can help you figure out exactly what it is.
Once extracted, look for .exe , .bat , or .scr files, as these can execute harmful code. If the file name was part of a larger set (e
Right-click the file and select Properties to see when it was created.