The best advice that can be offered is for you remove Wireshark Antivirus immediately upon detection
. You could make use of the manual removal instructions but you need to be seriously warned that you run the risk of causing even further damage to your computer if you do something incorrectly. It is strongly advised that you rather make use of a decent and up to date antispyware removal tool that is able to both detect as well as automatically delete Wireshark Antivirus for you.