No doubt, its a virus, or back door hacker....
alright so you are saying you have a back door hacker ?
close every application that uses internet give it a couple for it to close next run
netstat
if you see connections still established I want you to run
netstat -b -n
we wanna see the application that's open and the connection that has a internet connection.
now if you did not have any connections but you still assume someone is hacking open up command prompt type in
netstat -an -b 20
every 20 secconds you will see your internet connections. you can watch the ip addresses you are connecting to.
now if you want something that is more gui friendly than cmd download shane's tool
http://www.tweaking.com/content/page/tweaking_com_technicians_toolbox.htmlin fact that network tool is amazing
internet security specialist was my main job for awhile. The program I personally used to analye a lot of network traffic is
https://www.wireshark.org/download.htmlyou can see everything running all the way down to each packet.
you can even see traffic from your isp provider.
You need to understand the basic's of network computer talking to understand most of what this program sniff's