As lord and wolffox said, if you downloaded FH from this site, this should not be happening.
Delete feralheart and redownload from this website and install it.
Do a antivirus scan with a different antivirus that the one you already have, for example, any trustworty online free scaning like windows live care, i would recommend a free antivirus demo like housecall of trend micro.
Someone else uses your computer and/or intalled something that runs with feralheart?
Did you have any programs like teamviewer or logmein actives?
In the worst case of still having that trouble, im would recommend to even format the hard disk and reinstall the entire windows operating system to get rid of everything that could be hidden (i know, not easy or fast to do).