From 2-spyware.com
Criminals develop the Ooii file virus for the purpose of money extortion. This threat locks files once it gets on the machine and scams people into paying the ransom demand. A strong encryption algorithm allows the threat to change the original code of the file and makes it unopenable.[1]
Ooii ransomware is a malicious program designed to encrypt all personal data on the computer and then demand ransom for its return. This virus can be downloaded and carried by using various methods, but one of the more common ways to spread the threat involves downloading pirated content or malicious files from email messages.