Few days ago I noticed a new software in my computer named "lavasoft webcompanion". I have no idea from where it came. I have never installed anything from lavasoft. So, I uninstall the program.
Today I notice few ads at the beginning of my Google search result. These ads are not from google. So, I open Firefox with procexp. I find a dll named lavasofttcpservice.dll loaded into firefox which is located in
C:\\Windows\SysWOW64\ directory. This dll seems suspicious to me because I have removed a program from the same company few days ago and it is loaded in almost every program running in my system. I try to remove it but system prevents me as other programs are using it. I try to rename it and it successfully renamed into new name. Then I restart the program and remove the dll from the computer. I also notice another dll in
C:\\Windows\system32\ with name
lavasofttcpservice64.dll (cann't remember the name exactly). I delete it in same process.
But next time I restart my computer, open Firefox and try to browse a website, but it does not work. When I type a web address and hit Enter it does nothing but clear the address bar. I can't even login to Skype. Icon in my task bar was showing I have Internet access.
I have Internet access but no application can access the Internet. Any thought on troubleshooting will be appreciated. I am having this problem on a Win7 x64 machine.