It is important to clarify from the outset that the specific file name and path you mentioned — http www51scopecn files setuprar — appears to be either . A typical software installer would not contain a web address ( http www51scopecn ) as part of a filename or path, nor would a legitimate .rar archive or setup file be named in such a manner.
⚠️ If you already ran it, run a full antivirus scan immediately. It is important to clarify from the outset