Cybercriminals have spammed out a malicious attack posing as a notification from the FBI that you have been visiting illegal websites. If you make the mistake of running the program in the attached ZIP file, youll find that your computer is hit with a fake anti-virus attack designed to scare you into handing over your credit card details. Sophos products intercept the email messages as spam, and also detect the attachment asreceive the message as a message.”]
Source: https://grahamcluley.com/fbi-says-youve-been-visiting-illegal-websites-its-a-malware-attack/