I've been tasked with fixing a computer. The main issue I'm now facing is that once plugged into a Cat5 connection, some unknown program immediately starts accessing and downloading from the internet. At first I thought virus/malware, but the computer was running Norton 360, and an application of Malwarebytes revealed nothing except a couple of tracking cookies. Did research, found that Norton does a lot of downloading, so killed it and installed AVGfree instead. During that space, where the computer was setting up the install and downloading the 32Mb program, My available bandwidth dropped from 248 to 173. Yeah, I'm on Hughesnet. Anyhow, I checked the firewall log and it showed some interesting access points. I whois'd them, and found that I was accessing AMAZON-2011L , Akamai, Google, TribalFusion and ENET-XLHOST. Among others. Which is amazing, since the only open program window was for the AVG install. The computer is infested with AOL, which isn't my choice, but there it is.
Any ideas on what could cause this drain? It has run through 250+Mb while unattended, and is really starting to piss me off.