Once executed, the malware typically copies itself to all connected drives and network shares to infect other systems. It may also modify system registry keys to ensure it runs every time the computer starts.
If you found this on a thumb drive, scan that drive specifically before using it on any other device.
While it appears to have an .mp4 extension, it is often an executable ( .exe ) disguised with a double extension (e.g., OH YES TWERKING MOVE.mp4.exe ) or a malicious script.
Use an updated antivirus or anti-malware tool to scan your entire system to ensure no remnants or secondary infections exist.
Ensure your operating system and security software are fully up to date to protect against the vulnerabilities this malware exploits.