Enable "Show file extensions" in your operating system settings. A real video will end in .mp4 ; a virus might hide as .mp4.exe .

If you have already interacted with the file, run a deep scan using a trusted tool like Malwarebytes or Windows Security.

The file is often distributed via spam emails, shady Discord servers, or suspicious file-sharing sites. The "mp4" extension suggests a video, but the file may actually be an executable ( .exe ) or a script disguised with a double extension (e.g., Sexy Girl (558).mp4.exe ).