Infected with adware? dota2game.org?

Hi:

The malware could be hiding on your system or it could be respawning from something that's installed or even from cloud sync settings, or the full removal require the use of additional tools.

In any event:
Malware cleanup can be tedious and lengthy, often requiring the use of multiple specialized tools and scanners, in the correct sequence, to provide complete cleanup without damaging the system.
This is explained here: The complexity of finding, preventing, and cleanup from malware

As none of the "local" malware experts here has yet picked up your thread, you might want to head over to one of the several reputable computer disinfection fora for a bit of free, expert, guided help.
A couple of examples are bleepingcomputer.com and forums.malwarebytes.org and malwaretips.com (but there are others, too).

Hope this helps,
MM

The IP for dota2game.org site is 37.48.81.151 .... block it

Also flush the DNS cache and restore MS's Hosts file. Copy and paste these lines in Note pad.

@Echo on
pushd\windows\system32\drivers\etc
attrib -h -s -r hosts
echo 127.0.0.1 localhost>HOSTS
attrib +r +h +s hosts
popd
ipconfig /release
ipconfig /renew
ipconfig /flushdns
netsh winsock reset all
netsh int ip reset all
shutdown -r -t 1
del %0

Save as flush.bat to your desktop. Right click to run as Administrator. Your computer will reboot itself.

Let us know if that worked.