Hola LaNegru87, con HijackThis dale FIX a estas entradas:

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://lookfor.cc/sp.php?pin=17702
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://lookfor.cc/sp.php?pin=17702
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://lookfor.cc?pin=17702
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://lookfor.cc/sp.php?pin=17702
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://lookfor.cc/sp.php?pin=17702
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://lookfor.cc/sp.php?pin=17702
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://lookfor.cc?pin=17702

Reinicia y hacele un escaneo online con "Ewido Scanner Online"

Usa el Disk Cleaner para limpiar cookies y temporales y RegSeeker para limpiar el registro de Win.

Reinicia ynos contas los resultados.

Salu2

__________________