Posto il Log di haijackthis di un pc che uso poco. Potete controllare se c'è qualcosa che non va o è tutto ok?
Ho fatto scansione con awast, poi con combofix, e poi con spybot. Poi pulito tutto con ccleaner, fatto scandisk e in fine deframmentazione.

Ora se potete controllarmi il log vediamo se è tutto apposto.
Grazie.





Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 16.43.35, on 21/05/2011
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.17096)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Programmi\Alwil Software\Avast5\AvastSvc.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\System32\igfxtray.exe
C:\WINDOWS\System32\hkcmd.exe
C:\Programmi\Apoint2K\Apoint.exe
C:\Programmi\TOSHIBA\Power Management\CePMTray.exe
C:\Programmi\TOSHIBA\TouchPad\TPTray.exe
C:\Programmi\Alwil Software\Avast5\avastUI.exe
C:\WINDOWS\system32\ezSP_Px.exe
C:\Programmi\Chiavetta Internet Olicard 145\ModemListener.exe
C:\Programmi\Microsoft ActiveSync\wcescomm.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\Apoint2K\Apntex.exe
C:\PROGRA~1\MICROS~3\rapimgr.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Programmi\TOSHIBA\Power Management\CeEPwrSvc.exe
C:\Programmi\File comuni\DeviceHelper\DeviceManager.exe
C:\Programmi\McAfee\SiteAdvisor\McSACore.exe
C:\WINDOWS\System32\HPZipm12.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\TUProgSt.exe
C:\WINDOWS\system32\rundll32.exe
C:\Programmi\Chiavetta Internet Olicard 145\Hspa USB Modem.exe
C:\Programmi\Mozilla Firefox\firefox.exe
C:\Programmi\Mozilla Firefox\plugin-container.exe
C:\WINDOWS\system32\msiexec.exe
C:\Programmi\Trend Micro\HijackThis\HiJackThis.exe

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://it.search.yahoo.com/search?fr=mcafee&p=%s
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
R3 - URLSearchHook: McAfee SiteAdvisor Toolbar - {0EBBBE48-BAD4-4B4C-8E5A-516ABECAE064} - c:\PROGRA~1\mcafee\SITEAD~1\mcieplg.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: McAfee SiteAdvisor BHO - {B164E929-A1B6-4A06-B104-2CD0E90A88FF} - c:\PROGRA~1\mcafee\SITEAD~1\mcieplg.dll
O3 - Toolbar: McAfee SiteAdvisor Toolbar - {0EBBBE48-BAD4-4B4C-8E5A-516ABECAE064} - c:\PROGRA~1\mcafee\SITEAD~1\mcieplg.dll
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\System32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\System32\hkcmd.exe
O4 - HKLM\..\Run: [Apoint] C:\Programmi\Apoint2K\Apoint.exe
O4 - HKLM\..\Run: [CeEPOWER] C:\Programmi\TOSHIBA\Power Management\CePMTray.exe
O4 - HKLM\..\Run: [TPNF] C:\Programmi\TOSHIBA\TouchPad\TPTray.exe
O4 - HKLM\..\Run: [avast5] "C:\Programmi\Alwil Software\Avast5\avastUI.exe" /nogui
O4 - HKLM\..\Run: [ezShieldProtector for Px] C:\WINDOWS\system32\ezSP_Px.exe
O4 - HKLM\..\Run: [ModemListener] C:\Programmi\Chiavetta Internet Olicard 145\ModemListener.exe start
O4 - HKCU\..\Run: [H/PC Connection Agent] "C:\Programmi\Microsoft ActiveSync\wcescomm.exe"
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'Default user')
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra button: Create Mobile Favorite - {2EAF5BB1-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MICROS~3\INetRepl.dll
O9 - Extra button: (no name) - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MICROS~3\INetRepl.dll
O9 - Extra 'Tools' menuitem: Crea preferiti portatile... - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MICROS~3\INetRepl.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: PokerStars.it - {C4046502-6524-4d87-896C-878F57D1FF07} - C:\Programmi\PokerStars.IT\PokerStarsUpdate.exe
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O17 - HKLM\System\CCS\Services\Tcpip\..\{123B705D-FFA9-4D68-9823-EBC7A17C790C}: NameServer = 217.200.200.42 213.230.129.10
O17 - HKLM\System\CS1\Services\Tcpip\..\{123B705D-FFA9-4D68-9823-EBC7A17C790C}: NameServer = 217.200.200.42 213.230.129.10
O18 - Protocol: dssrequest - {5513F07E-936B-4E52-9B00-067394E91CC5} - c:\PROGRA~1\mcafee\SITEAD~1\mcieplg.dll
O18 - Protocol: sacore - {5513F07E-936B-4E52-9B00-067394E91CC5} - c:\PROGRA~1\mcafee\SITEAD~1\mcieplg.dll
O22 - SharedTaskScheduler: Precaricatore Browseui - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - C:\WINDOWS\System32\browseui.dll
O22 - SharedTaskScheduler: Daemon di cache delle categorie di componenti - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\WINDOWS\System32\browseui.dll
O23 - Service: avast! Antivirus - AVAST Software - C:\Programmi\Alwil Software\Avast5\AvastSvc.exe
O23 - Service: CeEPwrSvc - COMPAL ELECTRONIC INC. - C:\Programmi\TOSHIBA\Power Management\CeEPwrSvc.exe
O23 - Service: DeviceManager - Unknown owner - C:\Programmi\File comuni\DeviceHelper\DeviceManager.exe
O23 - Service: McAfee SiteAdvisor Service - McAfee, Inc. - C:\Programmi\McAfee\SiteAdvisor\McSACore.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\System32\HPZipm12.exe
O23 - Service: TuneUp Drive Defrag Service (TuneUp.Defrag) - TuneUp Software - C:\WINDOWS\System32\TuneUpDefragService.exe
O23 - Service: TuneUp Program Statistics Service (TuneUp.ProgramStatisticsSvc) - TuneUp Software - C:\WINDOWS\System32\TUProgSt.exe

--
End of file - 6593 bytes

Aggiorna Avast alla vs 6, poi fixa ed elimina questa voce:
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://it.search.yahoo.com/search?fr=mcafee&p=%s.
Installa Malwarebytes, aggiornalo e fai una scansione COMPLETA non veloce, elimina quello che trova, poi
vai in C:\windows, cerca la cartella prefetch, aprila e svuotala completamente, il resto è a posto.
Ciao