: The internal extension .mp4 suggests the archive contains a video file.
: A common tactic is naming a file Mia-CC259.mp4.exe but hiding the final .exe extension so it appears as a video to the user. Opening such a file runs malicious code directly. Mia-CC259.mp4.7z
: The .7z extension indicates a compressed archive created with 7-Zip . : The internal extension
If you have downloaded this file, follow these steps before opening it: 7zip Malware: Beware 7zip.com Mia-CC259.mp4.7z