The file is a compressed archive typically found on Ziperto , a well-known site for downloading ROMs and updates for the Nintendo Switch and 3DS . File Analysis & Identification
While the actual ROM files are generally considered "clean," the Ziperto website and its associated file hosts are notorious for malicious redirects and pop-ups. M_L-BIS-BJJ-USA-_Update12_-ENC-Ziperto.rar
"USA" indicates the North American version of the game. The file is a compressed archive typically found
It is strongly recommended to use a robust ad-blocker like uBlock Origin and a pop-up blocker if navigating these sites to avoid malicious scripts. rather than the base game itself.
"Update12" signifies it is a specific update file (v1.2) for the game, rather than the base game itself.