sto eseguendo tali operazioni da "modalità provvisoria". su modalità normale il pc presenta tali sintomi :
- qualunque programma cerco di avviare, viene automaticamente chiuso da un presunto antivirus fake che apre una finestra con su scritto che il progamma che cerco di avviare è infetto.
- si aprono pagine internet automaticamente. (per lo più siti porno)
- in basso a destra dove sta l'orologio compaiono in continuazione finestrelle con scritto : "sistem alert" o altre che mi chiedono se voglio scaricare il programma antivirus. ed inoltre è comparsa l'icona di uno scudetto che nn avevo mai visto.
queste sono le cose che mi impediscono di lavorare su modalità normale. qui su provvisoria ho già fatto tutte le operazioni con gli altri antivirus (Avira, spybot, cCleaner, ad-aware e clamwin, che però nn mi ha funzionato), ma non ha risolto nulla, non mi resta che provare con hijack, vi copio di segiuto il LOG :



Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 13.46.28, on 25/11/2010
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Safe mode with network support

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\Lavasoft\Ad-Aware\AAWService.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\TP-LINK\TL-WN321G\COMMON\TWCU.exe
C:\Programmi\Windows Live\Messenger\msnmsgr.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\Windows Live\Contacts\wlcomm.exe
C:\Programmi\Mozilla Firefox\firefox.exe
C:\Programmi\OfferBox\OfferBox.exe
C:\Programmi\freeTVRadio\spointer\freetvradio_air.exe
C:\Programmi\ClamWin\bin\ClamTray.exe
C:\Documents and Settings\Administrator\Documenti\Download\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://us.rd.yahoo.com/customize/ycomp/defaults/sb/*http://www.yahoo.com/search/ie.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://us.rd.yahoo.com/customize/ycomp/defaults/sp/*http://www.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.yahoo.com
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = localhost
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: &Yahoo! Toolbar Helper - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Programmi\Yahoo!\Companion\Installs\cpn0\yt.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: YSPManager - {25BC7718-0BFA-40EA-B381-4B2D9732D686} - C:\Programmi\Yahoo!\Search Protection\ysp.dll
O2 - BHO: Interest recogniser for Freetvradio (powered by Spointer) - {4C4AD71D-52E1-4402-9E5B-CBFC295EC9BA} - C:\Programmi\freeTVRadio\spointer\extensions\freetvradio_air_ie.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Programmi\Java\jre1.6.0_07\bin\ssv.dll
O2 - BHO: Guida per l'accesso a Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Programmi\File comuni\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: SkypeIEPluginBHO - {AE805869-2E5C-4ED4-8F7B-F1F7851A4497} - C:\Programmi\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O2 - BHO: OfferBox - {FC0D62C2-9640-4AEB-A5D5-CF25DF11FA8C} - C:\Programmi\OfferBox\OfferBoxBHO.dll
O2 - BHO: SingleInstance Class - {FDAD4DA1-61A2-4FD8-9C17-86F7AC245081} - C:\Programmi\Yahoo!\Companion\Installs\cpn0\YTSingleInstance.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Programmi\Yahoo!\Companion\Installs\cpn0\yt.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [RemoteControl] C:\Programmi\CyberLink\PowerDVD\PDVDServ.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programmi\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [DiskeeperSystray] "C:\Programmi\Executive Software\Diskeeper\DkIcon.exe"
O4 - HKLM\..\Run: [CamMonitor] C:\Programmi\Hewlett-Packard\Digital Imaging\\Unload\hpqcmon.exe
O4 - HKLM\..\Run: [Share-to-Web Namespace Daemon] C:\Programmi\Hewlett-Packard\HP Share-to-Web\hpgs2wnd.exe
O4 - HKLM\..\Run: [CorelDRAW Graphics Suite 11b] C:\Programmi\Corel\Corel Graphics 12\Languages\IT\Programs\Registration.exe /title="CorelDRAW Graphics Suite 12" /date=121005 serial=DR12WEX-1504397-KTY lang=IT
O4 - HKLM\..\Run: [LVCOMSX] C:\WINDOWS\system32\LVCOMSX.EXE
O4 - HKLM\..\Run: [LogitechVideoRepair] C:\Programmi\Logitech\Video\ISStart.exe
O4 - HKLM\..\Run: [LogitechVideoTray] C:\Programmi\Logitech\Video\LogiTray.exe
O4 - HKLM\..\Run: [SoundMAXPnP] C:\Programmi\Analog Devices\SoundMAX\SMax4PNP.exe
O4 - HKLM\..\Run: [SoundMAX] "C:\Programmi\Analog Devices\SoundMAX\Smax4.exe" /tray
O4 - HKLM\..\Run: [DU Meter] C:\Programmi\DU Meter\DUMeter.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Programmi\Java\jre1.6.0_07\bin\jusched.exe"
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [PCSuiteTrayApplication] C:\PROGRA~1\Nokia\NOKIAP~1\LAUNCH~1.EXE -startup
O4 - HKLM\..\Run: [avgnt] "C:\Programmi\Avira\AntiVir PersonalEdition Classic\avgnt.exe" /min
O4 - HKLM\..\Run: [sysftray2] c:\windows\bolivar33.exe
O4 - HKLM\..\Run: [Adobe Photo Downloader] "C:\Programmi\Adobe\Photoshop Album Starter Edition\3.0\Apps\apdproxy.exe"
O4 - HKLM\..\Run: [funkyemoticons] C:\Programmi\FunkyEmoticons\FunkyEmoticons.exe
O4 - HKLM\..\Run: [Ad-Watch] C:\Programmi\Lavasoft\Ad-Aware\AAWTray.exe
O4 - HKLM\..\Run: [ClamWin] "C:\Programmi\ClamWin\bin\ClamTray.exe" --logon
O4 - HKLM\..\RunOnce: [TSC] "C:\DOCUME~1\ADMINI~1\IMPOST~1\Temp\HouseCall\tsc.exe" /HD
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [LDM] C:\Program Files\Logitech\Desktop Messenger\8876480\Program\LogitechDesktopMessenger.exe
O4 - HKCU\..\Run: [LogitechSoftwareUpdate] C:\Programmi\Logitech\Video\ManifestEngine.exe boot
O4 - HKCU\..\Run: [Skype] "C:\Programmi\Skype\Phone\Skype.exe" /nosplash /minimized
O4 - HKCU\..\RunOnce: [FlashPlayerUpdate] C:\WINDOWS\system32\Macromed\Flash\NPSWF32_FlashUtil.exe -p
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-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'Default user')
O4 - Global Startup: BTTray.lnk = ?
O4 - Global Startup: hp psc 1000 series.lnk = ?
O4 - Global Startup: Logitech Desktop Messenger.lnk = C:\Program Files\Logitech\Desktop Messenger\8876480\Program\LogitechDesktopMessenger.exe.vir
O4 - Global Startup: TL-WN321G-Drahtlos-Tool.lnk = C:\Programmi\TP-LINK\TL-WN321G\COMMON\TWCU.exe
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Invia a &Bluetooth - C:\Programmi\WIDCOMM\Software Bluetooth\btsendto_ie_ctx.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.6.0_07\bin\npjpi160_07.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.6.0_07\bin\npjpi160_07.dll
O9 - Extra button: Skype Plug-In - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Programmi\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O9 - Extra 'Tools' menuitem: Skype Plug-In - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Programmi\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {BBF74FB9-ABCD-4678-880A-2511DAABB5E1} - C:\Programmi\Yahoo!\Search Protection\ysp.dll
O9 - Extra 'Tools' menuitem: Yahoo! Search Protection - {BBF74FB9-ABCD-4678-880A-2511DAABB5E1} - C:\Programmi\Yahoo!\Search Protection\ysp.dll
O9 - Extra button: @btrez.dll,-4015 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Programmi\WIDCOMM\Software Bluetooth\btsendto_ie.htm
O9 - Extra 'Tools' menuitem: @btrez.dll,-4017 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Programmi\WIDCOMM\Software Bluetooth\btsendto_ie.htm
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
O16 - DPF: {1F831FA9-42FC-11D4-95A6-0080AD30DCE1} (InstaFred) - file://C:\Programmi\AutoCAD 2002 Ita\InstFred.ocx
O16 - DPF: {20A60F0D-9AFA-4515-A0FD-83BD84642501} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab56986.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://teatrando-rc.spaces.live.com//PhotoUpload/MsnPUpld.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://v5.windowsupdate.microsoft.com/v5consumer/V5Controls/en/x86/client/wuweb_site.cab?1094491844417
O16 - DPF: {78AF2F24-A9C3-11D3-BF8C-0060B0FCC122} (Controllo AcDc oggi) - file://C:\Programmi\AutoCAD 2002 Ita\AcDcToday.ocx
O16 - DPF: {7FC1B346-83E6-4774-8D20-1A6B09B0E737} (Windows Live Photo Upload Control) - http://teatrando-rc.spaces.live.com/PhotoUpload/MsnPUpld.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsClient.cab31267.cab
O16 - DPF: {AE563729-B4F5-11D4-A415-00108302FDFD} (NOXLATE-BANR) - file://C:\Programmi\AutoCAD 2002 Ita\InstBanr.ocx
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/MsnMessengerSetupDownloader.cab
O16 - DPF: {B8BE5E93-A60C-4D26-A2DC-220313175592} (MSN Games - Installer) - http://messenger.zone.msn.com/binary/ZIntro.cab56649.cab
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab56907.cab
O16 - DPF: {E6187999-9FEC-46A1-A20F-F4CA977D5643} (ZoneChess Object) - http://messenger.zone.msn.com/binary/Chess.cab57176.cab
O16 - DPF: {F281A59C-7B65-11D3-8617-0010830243BD} (Controllo AcPreview) - file://C:\Programmi\AutoCAD 2002 Ita\AcPreview.ocx
O18 - Protocol: bwfile-8876480 - {9462A756-7B47-47BC-8C80-C34B9B80B32B} - C:\Program Files\Logitech\Desktop Messenger\8876480\Program\GAPlugProtocol-8876480.dll
O18 - Protocol: skype-ie-addon-data - {91774881-D725-4E58-B298-07617B9B86A8} - C:\Programmi\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FILECO~1\Skype\SKYPE4~1.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: Avira AntiVir Personal – Free Antivirus Scheduler (AntiVirScheduler) - Avira GmbH - C:\Programmi\Avira\AntiVir PersonalEdition Classic\sched.exe
O23 - Service: Avira AntiVir Personal – Free Antivirus Guard (AntiVirService) - Avira GmbH - C:\Programmi\Avira\AntiVir PersonalEdition Classic\avguard.exe
O23 - Service: Bluetooth Service (btwdins) - WIDCOMM, Inc. - C:\Programmi\WIDCOMM\Software Bluetooth\bin\btwdins.exe
O23 - Service: C-DillaSrv - C-Dilla Ltd - C:\WINDOWS\system32\DRIVERS\CDANTSRV.EXE
O23 - Service: Diskeeper - Executive Software International, Inc. - C:\Programmi\Executive Software\Diskeeper\DkService.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Programmi\File comuni\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: Lavasoft Ad-Aware Service - Lavasoft - C:\Programmi\Lavasoft\Ad-Aware\AAWService.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe
O23 - Service: Ralink Registry Writer (RalinkRegistryWriter) - Unknown owner - C:\Programmi\TP-LINK\TL-WN321G\COMMON\RegistryWriter.exe
O23 - Service: ServiceLayer - Nokia. - C:\Programmi\File comuni\PCSuite\Services\ServiceLayer.exe
O23 - Service: SoundMAX Agent Service (SoundMAX Agent Service (default)) - Analog Devices, Inc. - C:\Programmi\Analog Devices\SoundMAX\SMAgent.exe
O23 - Service: Yahoo! Updater (YahooAUService) - Yahoo! Inc. - C:\Programmi\Yahoo!\SoftwareUpdate\YahooAUService.exe

--
End of file - 12167 bytes

Inizia ad usare questo http://www.aiutamici.com/software?ID=80346
Installalo,aggiornalo e effettua una scansione completa. Alla fine elimina tutte le minacce e incolla il log che uscira'
Il tuo sistema non è aggiornato,cosi come il tuo internet explorer

Non aggiornare il S.O. è molto grave, a parte I.E. ma tu hai ancora il Service Pack 2 e quindi non puoi più fare aggiornamenti, quindi devi installare il S.P. 3, dopo aver sistemato bene il pc.

Calma,scarica sp3 da qui'
http://www.microsoft.com/downloads/details.aspx?FamilyID=5b33b5a8-5e76-401f-be08-1e1555d4f3d4&displaylang=it
giustamente sarebbe opportuno aggiornare il sistema dopo che tutto sia pulito
Rifai la scansione con malawarebytes e incolla il log qui'

Se il tuo S.O. non è originale il S.P. 3 non lo puoi installare e non potrai più fare nessun aggiornamento,
gli XP senza il S.P.3 non saranno più aggiornabili e sarai più esposto a rischi.
Comunque se vuoi fare una prova QUI trovi il Service Pack Center vai su XP e vedi cosa succede.

@cbbusto ....

si può installare SP3 .... basterà che negli aggiornamenti stia attento al WGA ... ed a NON scaricare NEGLI AGGIORNAMENTI CHE VERRANNO CONSIGLIATI DA FARE ..... il programma che controlla l'autenticità del sistema :O)

per il resto .... con la scansione con malwarebytes .... metti tutto in quarantena e solo dopo ... fai una scansione con CLAM win aggiornato in modalità provvisoria :O) ciao e buon lavoro

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