Before opening "morrita x.rar", you should verify its safety. Files with cryptic names shared on forums or via direct messages can sometimes contain malware or unwanted scripts.
Upload the file to VirusTotal to see if multiple antivirus engines flag it as malicious. morrita x.rar
If you see a file inside named something like setup.exe or run.bat that you weren't expecting, do not run it without further verification. Before opening "morrita x
If you don't have one, 7-Zip is free, open-source, and highly recommended. Before opening "morrita x.rar"