Ah, good old Kaspersky, questionable ties to the Russian government and faking viruses.You have a particularly violent virus on your computer. It leeches system performance at an alarming rate. It is called "Norton Antivirus". Sadly, this is a particularly nasty species and can only be removed by a complete format/reinstall. In order to prevent that from happening again, I recommend to use either one of: Kaspersky, Sophos, Webroot.
All kidding aside, this is not a confirmed virus signature, but a heuristics result, probably from ESO's server communication behaviour. Try closing the launcher while playing, since that one constantly updates the crown store advertisements - a behaviour that could also be attributed to malicious software trying to connect to a data dump site.
To be totally sure, I recommend to get a stand alone scan tool (available e.g. from f-secure) from a clean machine and put it on a USB stick. Start a scan from that one and check whether it finds something.
Oh yeah, and really get rid of norton, that is the definition of bloatware.