I noticed that the WLAN internet traffic reported usage despite my main PC was idle when i did an regular check on my router 24hours report for internet traffic.
So i scanned with everything i could think of.... including Malwarebytes, HitmanPRO, Kaspersky TDSS scanner, ComboFix
ESET NOD Online Scanner and found 0 infected items or files..
Moved on and checked my HOSTS file which was completely default. But the only strange thing i noticed is when i tried downloading TDSS killer from Bleepingcomputer forum link i got to 10.30.1.0 something in my browser Firefox (cant remember exact combination of numbers but looked similiar enough)
I installed netlimiter and only found strange ICMP and port 53 attempts from several computers within the home network.
Also found red checkmarks on Google Chrome trying to reach smtp.gmail.com like hundred times.
What im doing right now is
1. Installed windows 7 freshly on a Laptop from Dell
2. Connecting to router offline with TP ethernet cable
3. Resetting router and configuring password on 5Ghz , 2Ghz , router admin name change + complex password %&/(=? and numbers included aswell. Also changing default gateway IP to something other than 192.168.1.1....
4. Checking over Firewalll to block simple packets that comes through DoS attacks.
But i think i need help with resolving why my main PC is sending traffic for no reason... Check image below from yesterday when the PC was active in the network.