Il mio computer va un pò lento da alcuni giorni.
Mi potete controllare il log per vedere se è tutto ok?
Ho fatto scansione con malwarebites (non ha trovato elementi) e con adwclean (allego log dopo quello di hijackthis).
Grazie a tutti.
Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 18.44.53, on 11/05/2015
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
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:\Programmi\Sandboxie\SbieSvc.exe
C:\WINDOWS\System32\svchost.exe
C:\Programmi\Ahead\InCD\InCDsrv.exe
C:\WINDOWS\system32\svchost.exe
C:\Programmi\AVAST Software\Avast\AvastSvc.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\Java\jre7\bin\jqs.exe
C:\Programmi\File comuni\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\Programmi\AVAST Software\Avast\AvastUI.exe
C:\PROGRA~1\ALICET~1\vendors\AliceRE\content\template\DRIVEN~1\syncer\MCCITR~1.EXE
C:\WINDOWS\system32\RunDLL32.exe
C:\Programmi\File comuni\Java\Java Update\jusched.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\PeerBlock\peerblock.exe
C:\Programmi\Messenger\msmsgs.exe
C:\Programmi\Sandboxie\SbieCtrl.exe
C:\Programmi\CCleaner\CCleaner.exe
C:\Programmi\Telecom Italia\WanMiniport1st\srvany.exe
C:\Programmi\Telecom Italia\WanMiniport1st\WanMiniport1st_srv.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\wbem\unsecapp.exe
C:\Programmi\eMule\emule.exe
C:\Programmi\Sandboxie\SbieSvc.exe
C:\Programmi\Sandboxie\SbieSvc.exe
C:\Programmi\Internet Explorer\iexplore.exe
C:\Programmi\Internet Explorer\iexplore.exe
C:\Programmi\Internet Explorer\iexplore.exe
C:\Programmi\Trend Micro\HiJackThis\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.bing.com/search?q={searchTerms}&FORM=AVASDF&PC=AV01
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.virgilio.it/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.bing.com/search?q={searchTerms}&FORM=AVASDF&PC=AV01
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = 127.0.0.1;alicegate
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Programmi\Java\jre7\bin\ssv.dll
O2 - BHO: avast! Online Security - {8E5E2654-AD2D-48bf-AC2D-D17F00898D06} - C:\Programmi\AVAST Software\Avast\aswWebRepIE.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Programmi\Java\jre7\bin\jp2ssv.dll
O4 - HKLM\..\Run: [AvastUI.exe] "C:\Programmi\AVAST Software\Avast\AvastUI.exe" /nogui
O4 - HKLM\..\Run: [AliceRE_McciTrayApp] C:\PROGRA~1\ALICET~1\vendors\AliceRE\content\template\DRIVEN~1\syncer\MCCITR~1.EXE
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [NvMediaCenter] RunDLL32.exe NvMCTray.dll,NvTaskbarInit -login
O4 - HKLM\..\Run: [nwiz] C:\Programmi\NVIDIA Corporation\nview\nwiz.exe /installquiet
O4 - HKLM\..\Run: [Adobe ARM] "C:\Programmi\File comuni\Adobe\ARM\1.0\AdobeARM.exe"
O4 - HKLM\..\Run: [Aimersoft Helper Compact.exe] C:\Programmi\Common Files\Aimersoft\Aimersoft Helper Compact\ASHelper.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Programmi\File comuni\Java\Java Update\jusched.exe"
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [PeerBlock] C:\Programmi\PeerBlock\peerblock.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Programmi\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [SandboxieControl] "C:\Programmi\Sandboxie\SbieCtrl.exe"
O4 - HKCU\..\Run: [CCleaner Monitoring] "C:\Programmi\CCleaner\CCleaner.exe" /MONITOR
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVIZIO DI RETE')
O4 - HKUS\S-1-5-21-1801674531-515967899-725345543-1222\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'UpdatusUser')
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: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
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
O10 - Unknown file in Winsock LSP: c:\windows\system32\nwprovau.dll
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://www.update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1376437060651
O16 - DPF: {D821DC4A-0814-435E-9820-661C543A4679} (CRLDownloadWrapper Class) - http://drmlicense.one.microsoft.com/crlupdate/en/crlocx.ocx
O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} - http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{FD65EEE2-87FD-4FA9-8F8C-316D127918FA}: NameServer = 192.168.1.1,8.8.8.8
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: Adobe Flash Player Update Service (AdobeFlashPlayerUpdateSvc) - Adobe Systems Incorporated - C:\WINDOWS\system32\Macromed\Flash\FlashPlayerUpdateService.exe
O23 - Service: Avast Antivirus (avast! Antivirus) - Avast Software s.r.o. - C:\Programmi\AVAST Software\Avast\AvastSvc.exe
O23 - Service: Google Software Updater (gusvc) - Unknown owner - C:\Programmi\Google\Common\Google Updater\GoogleUpdaterService.exe (file missing)
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Programmi\File comuni\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: InCD Helper (InCDsrv) - Ahead Software AG - C:\Programmi\Ahead\InCD\InCDsrv.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Oracle Corporation - C:\Programmi\Java\jre7\bin\jqs.exe
O23 - Service: Mozilla Maintenance Service (MozillaMaintenance) - Mozilla Foundation - C:\Programmi\Mozilla Maintenance Service\maintenanceservice.exe
O23 - Service: Network WanMiniport First Position - Unknown owner - C:\Programmi\Telecom Italia\WanMiniport1st\srvany.exe
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: NVIDIA Update Service Daemon (nvUpdatusService) - NVIDIA Corporation - C:\Programmi\NVIDIA Corporation\NVIDIA Update Core\daemonu.exe
O23 - Service: Sandboxie Service (SbieSvc) - Sandboxie Holdings, LLC - C:\Programmi\Sandboxie\SbieSvc.exe

---

# AdwCleaner v4.203 - Logfile created 11/05/2015 at 18:39:24
# Updated 30/04/2015 by Xplode
# Database : 2015-05-09.1 [Server]
# Operating system : Microsoft Windows XP Service Pack 3 (x86)
# Username : Administrator - CRONOS
# Running from : C:\Documents and Settings\Administrator\Documenti\adwcleaner_4.203.exe
# Option : Scan

***** [ Services ] *****


***** [ Files / Folders ] *****

Folder Found : C:\Documents and Settings\Administrator\Dati applicazioni\CheckPoint\ZoneAlarm LTD Toolbar
Folder Found : C:\Documents and Settings\Administrator\Dati applicazioni\pdfforge
Folder Found : C:\Documents and Settings\Administrator\Impostazioni locali\Dati applicazioni\pdfforge

***** [ Scheduled tasks ] *****


***** [ Shortcuts ] *****


***** [ Registry ] *****

Data Found : HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings [ProxyOverride] - 127.0.0.1;alicegate
Key Found : HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{3CA2F312-6F6E-4B53-A66E-4E65E497C8C0}
Key Found : HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{D4027C7F-154A-4066-A1AD-4243D8127440}
Key Found : HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{3CA2F312-6F6E-4B53-A66E-4E65E497C8C0}
Key Found : HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{D4027C7F-154A-4066-A1AD-4243D8127440}
Key Found : HKLM\SOFTWARE\Classes\AppID\{9B0CB95C-933A-4B8C-B6D4-EDCD19A43874}
Key Found : HKLM\SOFTWARE\Classes\AppID\{C007DADD-132A-624C-088E-59EE6CF0711F}
Key Found : HKLM\SOFTWARE\Classes\CLSID\{1663C10B-0D55-438D-8496-19A3DBAEC0E4}
Key Found : HKLM\SOFTWARE\Classes\FTDownloader
Key Found : HKLM\SOFTWARE\Classes\Interface\{6C434537-053E-486D-B62A-160059D9D456}
Key Found : HKLM\SOFTWARE\Classes\Interface\{91CF619A-4686-4CA4-9232-3B2E6B63AA92}
Key Found : HKLM\SOFTWARE\Classes\Interface\{AC71B60E-94C9-4EDE-BA46-E146747BB67E}
Key Found : HKLM\SOFTWARE\Classes\protector_dll.protectorbho
Key Found : HKLM\SOFTWARE\Classes\protector_dll.protectorbho.1
Key Found : HKLM\SOFTWARE\Classes\TypeLib\{2996F0E7-292B-4CAE-893F-47B8B1C05B56}
Key Found : HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\App Management\ARPCache\ZoneAlarm Toolbar
Key Found : HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ZoneAlarm LTD Toolbar
Key Found : HKLM\SOFTWARE\MozillaPlugins\@checkpoint.com/FFApi

***** [ Web browsers ] *****

-\\ Internet Explorer v8.0.6001.18702


-\\ Mozilla Firefox v37.0.2 (x86 it)


-\\ Google Chrome v


*************************

AdwCleaner[R0].txt - [2533 bytes] - [11/05/2015 18:39:24]

########## EOF - C:\AdwCleaner\AdwCleaner[R0].txt - [2592 bytes] ##########

Qualcosa c'è da eliminare.
Prima cosa cancella tutto quello che ha trovato ADWcleaner, clicca su "Clean" conferma con OK le varie finestre che ti compariranno.
Il pc si riavvierà, e uscirà il log con le eliminazioni.

Chiudi tutti i programmi e disconnesso da internet,
Lancia HijackThis e clicca sul secondo pulsante Do a system scan only
inserisci il segno di spunta nel quadratino davanti alle righe sotto indicate, una volta seleziona clicca il tasto Fix checked per procedere all'eliminazione, comparirà una finestra clicca su SI per accettare e l'operazione è conclusa.

Ti preciso che eliminando le voci 04, i programmi non vengono toccati ma viene solo disattivato l'Avvio automatico, inutile......basterebbe solo l'antivirus.

Ricorda che Hijackthis deve essere avviato da una cartella a lui dedicata meglio sul desktop. Solo così Hijackthis creerà copie di backup di quello che viene eliminato prima di apportare modifiche, così in caso di inconvenienti si possono reinstallare.

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.bing.com/search?q={searchTerms}&FORM=AVASDF&PC=AV01
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.bing.com/search?q={searchTerms}&FORM=AVASDF&PC=AV01
O4 - HKLM\..\Run: [AliceRE_McciTrayApp] C:\PROGRA~1\ALICET~1\vendors\AliceRE\content\template\DRIVEN~1\syncer\MCCITR~1.E XE
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [NvMediaCenter] RunDLL32.exe NvMCTray.dll,NvTaskbarInit -login
O4 - HKLM\..\Run: [nwiz] C:\Programmi\NVIDIA Corporation\nview\nwiz.exe /installquiet
O4 - HKLM\..\Run: [Adobe ARM] "C:\Programmi\File comuni\Adobe\ARM\1.0\AdobeARM.exe"
O4 - HKLM\..\Run: [Aimersoft Helper Compact.exe] C:\Programmi\Common Files\Aimersoft\Aimersoft Helper Compact\ASHelper.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Programmi\File comuni\Java\Java Update\jusched.exe"
O4 - HKCU\..\Run: [PeerBlock] C:\Programmi\PeerBlock\peerblock.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Programmi\Messenger\msmsgs.exe" /background
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVIZIO DI RETE')
O4 - HKUS\S-1-5-21-1801674531-515967899-725345543-1222\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'UpdatusUser')

Aggiorna Java hai una versione vecchia. Col vecchio XP meno roba hai e meglio è.
Fai sapere se il pc è migliorato. Ciao

Dopo aver scritto la mia risposta ho notato che un'icona sella maschera del browser. Ho capito che era quella di avast on line security che avevo attivato nel pomeriggio.
Ho letto in internet come si disattivava e subito sandboxie è ripartito.

Grazie ancora e ciao.