The second variant of Police Central e-crime Unit (PCeU) ransomware belongs to the Win32/Reveton malware family. As you can see, the fake waning is slightly different, more sophisticated, claiming to be from Specialist Crime Directorate rather than Metropolitan Police.
cyber ciminals exploit Java and Flash vulnerabilities to load the malicious code on targeted computers. It’s very important to keep your machine updated.
More useful info here
https://deletemalware.blogspot.co.uk/2012/07/remove-police-central-e-crime-unit.html
https://www.malwarebytes.org/
https://www.surfright.nl/en
