Lo que pasa es que tienes una variante de StarPage y por eso se están generando esas entradas, sigue estos pasos:

1.- Descarga la herramienta AboutBuster y CWShredder pero no los ejecutes aún.

2.- Apaga el "Restaurar Sistema"

3.- Activa la opción Ver Archivos Ocultos

4.- Reinicia en Modo a Prueba de Fallos

5.- Cierra todos los programas, ejecuta HijackThis y dale "Fix Cheked" a estas entradas:

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\keaco.dll/sp.html#10001%resultposition.net

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = res://C:\WINDOWS\keaco.dll/sp.html#10001%resultposition.net

R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = res://C:\WINDOWS\keaco.dll/sp.html#10001%resultposition.net

R3 - Default URLSearchHook is missing

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6.- Sin reiniciar, busca y elimina este archivo, si no se deja eliminar descarga el programa "Killbox" y sigue las indicaciones del mensaje, copia y pega el archivo para que lo elimine al reiniciar.

C:\WINDOWS\keaco.dll

7.- Realiza un escaneo con AboutBuster y CWShredder.

8.- Pasa el Disk Cleaner para limpiar cookies y temporales

9.- Pasa el Regseeker para Limpiar el Registro, pásalo hasta q no quede nada para eliminar.

10.- Pasa el Ad-Aware SE actualizado.

11.- Reinicia la maquina y realiza un escaneo con Ewido Online, luego pega otro log de Hijackthis y nos cuentas como te fue.

De preferencia imprime las indicaciones para que se te haga mas facil seguirlas.

Saludos