Go to
this site and submit the following files and post the results:
C:\Windows\system32\dmfne.exe
Run HijackThis and check the following:
O4 - HKCU\..\Run: [dmehc.tmp] C:\Windows\system32\dmehc.tmp
O17 - HKLM\System\CCS\Services\Tcpip\..\{0642EFCB-8E53-40C6-82BB-3788A1190ACD}: NameServer = 208.67.220.220,208.67.222.222
O17 - HKLM\System\CCS\Services\Tcpip\..\{FDC2A44D-81CB-45BC-8E16-D7D689378DD8}: NameServer = 208.67.220.220,208.67.222.222
O17 - HKLM\System\CS1\Services\Tcpip\Parameters: NameServer = 208.67.220.220,208.67.222.222
O17 - HKLM\System\CS1\Services\Tcpip\..\{0642EFCB-8E53-40C6-82BB-3788A1190ACD}: NameServer = 208.67.220.220,208.67.222.222
O17 - HKLM\System\CS2\Services\Tcpip\Parameters: NameServer = 208.67.220.220,208.67.222.222
O17 - HKLM\System\CS2\Services\Tcpip\..\{0642EFCB-8E53-40C6-82BB-3788A1190ACD}: NameServer = 208.67.220.220,208.67.222.222
O17 - HKLM\System\CCS\Services\Tcpip\Parameters: NameServer = 208.67.220.220,208.67.222.222
Click FIX CHECKED
Post a new HijackThis log along with the result from virustotal.