Hackers love multi-part RARs. Because security software scans .rar files, but not always the contents of a fragmented multi-part set, a malicious actor could hide a Trojan or a Bitcoin miner inside part23 . By the time you find all 45 parts, you might have already executed the malware disguised as setup.exe .
MAME-Plus-v0.139u1.part23.rar is a specific segment of a multi-part compressed archive containing the MAME Plus! arcade emulator, version Understanding the File Components MAME Plus! : An enhanced version of the Multiple Arcade Machine Emulator (MAME) MAME-Plus-v0.139u1.part23.rar