Use a reputable antivirus or anti-malware tool like Malwarebytes or Windows Defender to remove the infection.
If you have downloaded or are considering downloading this file, please be aware of the following:
Stop the malware from sending your data to the attacker.
Always exercise extreme caution when downloading .rar or .exe files from unverified sources, especially those promising "free" cheats or premium features.
From a different, clean device, change the passwords for your email, Discord, Steam, and any financial accounts.