seems to come with a anti spyware and anti virus suite. slows everything down and leaves a declaration on your screen nearly 25% of your screen. There is a simple fix posted just type its name into google
Hi aslyn,
Somebody added it to your Titlebar - likely through registry/group policy.
Look in your registry:
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
“Window Title”=
polonus
Hi Polonus. fortunately did not have this pest myself, it was on a mates system. He had typed the name into google search which took him to a microsoft forum where he found instructions to remove. The forum seemed to have loads asking for help with it, thought it was worth mentioning here Forwarned as they say.
looked it up on Google and found another Forum that had a great way to get rid of this pest
www.dslreports.com/forum/r20082590-MonaRonaDona-virus
I fortunately used the HiJackThis method and it worked great so far but hope avast can prevent this from happening again
Avast has worked great until this showed up and the problem blasted past it
Welcome to the forums, Schnukums. 
Thanks to you and aslyn for posting about this. Hopefully, the avast team will add detection for this soon.