A window with CIA identification and a message which begins in the following manner: „IMPORTANT! PLEASE READ! Unfortunately the files on this computer (documents, photos, videos) have been encrypter using an extremely secure and unbreakable algorithm… “ is related with yet another lock screen ransomware called CIA Special Agent 767.
Article Link: http://bestsecuritysearch.com/cia-special-agent-767-ransomware-virus-removal/