DNS Changes Automatically to 85.xxx.xxx.xxx

My PC was infected with a trojan last week. The main objective of this trojan was to change the default DNS entries to its own preferred DNS server. In my case it pointed to 85.255.xxx.xxx and I was unable to access SQL Server (on my LAN) using windows authentication. Since my preferred DNS was the domain controller and now that dns entry kept changing to the trojan preferred DNS server.

Finally after a lot of search over the internet, this was the best possible solution I found and resolved my issue.

http://vil.nai.com/vil/content/v_143834.htm

The part that did the trick was,

1. Click on Start->Run and type “netsh” followed the ENTER key.
2. Type “int ip reset reset.log” followed by the ENTER key.
3. Type “quit” followed by the ENTER key.