Ciao a tutti! Da tre giorni Avast mi segnala un po' di url infetti, alcuni anche navigando qui sul forum.
Potreste darre uno sguardo al mio Log di Hijackthis?
Grazie mille.
Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 16:37:12, on 19/05/2014
Platform: Windows 7 SP1 (WinNT 6.00.3505)
MSIE: Internet Explorer v10.0 (10.00.9200.16866)
Boot mode: Normal

Running processes:
C:\windows\system32\taskeng.exe
C:\windows\system32\taskhost.exe
C:\windows\system32\Dwm.exe
C:\windows\Explorer.EXE
C:\Program Files\Samsung\Samsung Recovery Solution 4\WCScheduler.exe
C:\Program Files\Samsung\Easy Display Manager\dmhkcore.exe
C:\Program Files\Samsung\Samsung Support Center\SSCKbdHk.exe
C:\Program Files\SAMSUNG\EasySpeedUpManager\EasySpeedUpManager.exe
C:\windows\system32\igfxext.exe
C:\windows\system32\igfxsrvc.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\Windows\System32\igfxpers.exe
C:\windows\system32\igfxsrvc.exe
C:\Program Files\AVAST Software\Avast\AvastUI.exe
C:\Program Files\Synaptics\SynTP\SynTPHelper.exe
C:\windows\system32\wuauclt.exe
C:\PROGRA~1\samsung\SAMSUN~2\SUPNOT~1.EXE
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\windows\system32\Macromed\Flash\FlashUtil32_13_0_0_214_ActiveX.exe
C:\Program Files\Trend Micro\HiJackThis\HiJackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.it/
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/p/?LinkId=255141
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: avast! Online Security - {8E5E2654-AD2D-48bf-AC2D-D17F00898D06} - C:\Program Files\AVAST Software\Avast\aswWebRepIE.dll
O2 - BHO: Windows Live ID Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O4 - HKLM\..\Run: [SynTPEnh] %ProgramFiles%\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [Persistence] C:\windows\system32\igfxpers.exe
O4 - HKLM\..\Run: [AvastUI.exe] "C:\Program Files\AVAST Software\Avast\AvastUI.exe" /nogui
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~3\Office12\EXCEL.EXE/3000
O9 - Extra button: @C:\Program Files\Windows Live\Writer\WindowsLiveWriterShortcuts.dll,-1004 - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: @C:\Program Files\Windows Live\Writer\WindowsLiveWriterShortcuts.dll,-1003 - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Invia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~3\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: I&nvia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~3\Office12\ONBttnIE.dll
O9 - Extra button: Skype Plug-In - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Program Files\Skype\Toolbars\Internet Explorer\skypeieplugin.dll (file missing)
O9 - Extra 'Tools' menuitem: Skype Plug-In - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Program Files\Skype\Toolbars\Internet Explorer\skypeieplugin.dll (file missing)
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\Office12\REFIEBAR.DLL
O10 - Unknown file in Winsock LSP: c:\program files\common files\microsoft shared\windows live\wlidnsp.dll
O10 - Unknown file in Winsock LSP: c:\program files\common files\microsoft shared\windows live\wlidnsp.dll
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O17 - HKLM\System\CCS\Services\Tcpip\..\{95DE52F9-5E06-47C9-BE22-4B7FE2603F77}: NameServer = 8.8.8.8,8.8.4.4
O17 - HKLM\System\CCS\Services\Tcpip\..\{B5E9509A-5297-43D8-87EB-65E3B44F2BBE}: NameServer = 8.8.8.8,8.8.4.4
O18 - Protocol: skype-ie-addon-data - {91774881-D725-4E58-B298-07617B9B86A8} - C:\Program Files\Skype\Toolbars\Internet Explorer\skypeieplugin.dll (file missing)
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL
O18 - Protocol: wlpg - {E43EF6CD-A37A-4A9B-9E6F-83F89B8E6324} - C:\Program Files\Windows Live\Photo Gallery\AlbumDownloadProtocolHandler.dll
O23 - Service: Adobe Flash Player Update Service (AdobeFlashPlayerUpdateSvc) - Adobe Systems Incorporated - C:\windows\system32\Macromed\Flash\FlashPlayerUpdateService.exe
O23 - Service: avast! Antivirus - AVAST Software - C:\Program Files\AVAST Software\Avast\AvastSvc.exe

--
End of file - 4930 bytes

Il log di HJT (per quello che può valere) risulta pulito.
Prova questa scansione:
Scarica Adwcleaner sul desktop:
http://general-changelog-team.fr/fr/downloads/finish/20-outils-de-xplode/2-adwcleaner
Chiudi tutti i browser (è importante che siano chiusi: IE,Firefox, Chrome ecc...)
Clicca sul pulsante "Scansiona".
Finita la scansione clicca su "Pulisci"
Conferma con OK le varie finestre che ti compariranno.
Il pc si riavvierà, e uscirà il log con le eliminazioni.
Postalo qui.

Scarica ed installa HitmanPro: clicca qui per il download (scegli la versione adatta al tuo S.O. - 32 Bit o 64 Bit)
http://www.surfright.nl/en/downloads
una volta lanciato, nella schermata principale clicca su Impostazioni
In "Azione predefinita" clicca nel menù a tendina e scegli "Elimina", ( Di default trovi "Ignora" )
clicca su Licenza (in alto) e poi Attiva .
Metti la spunta (in basso) a "Accetto i termini dell'accordo di licenza".
lancia la scansione (lascia le impostazioni di default);
al termine della scansione ti verrà mostrato un riepilogo: nella finestra di riepilogo, in basso a sinistra, avrai modo di salvare il Report generato .
Postalo qui.