It is highly likely that this file name is one of the following:
Many modern malware strains or automated systems generate random strings (like "mascvohe") for filenames to avoid detection by signature-based antivirus software. mascvohe.rar
Use a reputable tool like the Microsoft Safety Scanner or upload the file to VirusTotal to check it against multiple antivirus engines. It is highly likely that this file name
Could you provide on where you saw this file name or what it is supposed to contain? mascvohe.rar
If this was downloaded automatically, it may be part of a "drive-by download" attack.