Project4_Bot_Lobby.rar appears to be a specific archive file often associated with gaming "bot lobby" tools or scripts, typically for titles like .
.rar files containing "game cheats" are the primary delivery method for malware. They often ask you to "disable your antivirus" to run, which allows the software to steal your browser passwords, Discord tokens, or crypto wallets.
While there is no official "Project4" software from a mainstream developer,
with an updated tool like Malwarebytes or upload the file to VirusTotal to see if other engines detect it as a threat.