Ciao!
Mi sono beccato qualcosa che non riesco a trovare né con SpyBot né con Ad-Aware... In pratica mentre navigo con Explorer mi si aprono delle nuove finestre di pubblicità e una con un programma da scaricare.

Ecco il log:

Logfile of HijackThis v1.99.1
Scan saved at 16.30.32, on 19/11/2005
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\LAUNCH~1\QtaET2S.EXE
C:\Programmi\Microsoft Hardware\Keyboard\type32.exe
C:\Programmi\Microsoft Hardware\Mouse\point32.exe
C:\Programmi\QuickTime\qttask.exe
C:\Programmi\File comuni\Real\Update_OB\realsched.exe
C:\Programmi\Java\jre1.5.0_04\bin\jusched.exe
C:\Programmi\AVPersonal\AVGNT.EXE
C:\WINDOWS\win3208561027583.exe
C:\Programmi\MSN Messenger\MsnMsgr.Exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\FinePixViewer\QuickDCF.exe
C:\Programmi\Apache Group\Apache2\bin\ApacheMonitor.exe
C:\Programmi\Hewlett-Packard\Digital Imaging\bin\hpotdd01.exe
C:\Programmi\Hewlett-Packard\Digital Imaging\bin\hpohmr08.exe
C:\mysql\bin\winmysqladmin.exe
C:\Programmi\AVPersonal\AVWUPSRV.EXE
C:\mysql\bin\mysqld-nt.exe
C:\Programmi\Hewlett-Packard\Digital Imaging\bin\hpoevm08.exe
C:\WINDOWS\System32\svchost.exe
C:\Programmi\Hewlett-Packard\Digital Imaging\Bin\hpoSTS08.exe
C:\PROGRAMMI\AVPERSONAL\AVGUARD.EXE
C:\Programmi\Winamp\Winamp.exe
C:\WINDOWS\system32\divxsm.exe
C:\Documents and Settings\Joe\Desktop\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.streetgangsta.com/
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page_bak = http://www.domdesign.tk/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\Programmi\Spybot - Search & Destroy\SDHelper.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\programmi\google\googletoolbar3.dll
O4 - HKLM\..\Run: [LaunchApp] Alaunch
O4 - HKLM\..\Run: [Apoint] C:\Programmi\Apoint2K\Apoint.exe
O4 - HKLM\..\Run: [LManager] C:\PROGRA~1\LAUNCH~1\QtaET2S.EXE
O4 - HKLM\..\Run: [REGSHAVE] C:\Programmi\REGSHAVE\REGSHAVE.EXE /AUTORUN
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [CloneDVDElbyDelay] "C:\Programmi\Elaborate Bytes\CloneDVD\ElbyCheck.exe" /L ElbyDelay
O4 - HKLM\..\Run: [IntelliType] "C:\Programmi\Microsoft Hardware\Keyboard\type32.exe"
O4 - HKLM\..\Run: [POINTER] point32.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programmi\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [TkBellExe] "C:\Programmi\File comuni\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [PinnacleDriverCheck] C:\WINDOWS\System32\PSDrvCheck.exe -CheckReg
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Programmi\Java\jre1.5.0_04\bin\jusched.exe
O4 - HKLM\..\Run: [AVGCtrl] C:\Programmi\AVPersonal\AVGNT.EXE /min
O4 - HKLM\..\Run: [win3208561027583] C:\WINDOWS\win3208561027583.exe
O4 - HKCU\..\Run: [MsnMsgr] "C:\Programmi\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [PcSync] C:\Programmi\Nokia\Nokia PC Suite 6\PcSync2.exe /NoDialog
O4 - HKCU\..\Run: [Kazaa All-In-One] C:\Programmi\Kazaa All-In-One\Kazaa-All-In-One.exe
O4 - Startup: WinMySQLadmin.lnk = C:\mysql\bin\winmysqladmin.exe
O4 - Startup: PowerReg Scheduler.exe
O4 - Global Startup: Exif Launcher.lnk = C:\Programmi\FinePixViewer\QuickDCF.exe
O4 - Global Startup: Monitor Apache Servers.lnk = C:\Programmi\Apache Group\Apache2\bin\ApacheMonitor.exe
O4 - Global Startup: Adobe Gamma Loader.lnk = C:\Programmi\File comuni\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: hpoddt01.exe.lnk = ?
O4 - Global Startup: hp psc 1000 series.lnk = ?
O8 - Extra context menu item: &Cerca con Google - res://c:\programmi\google\GoogleToolbar3.dll/cmsearch.html
O8 - Extra context menu item: &Traduci parola in italiano - res://c:\programmi\google\GoogleToolbar3.dll/cmwordtrans.html
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: Link a ritroso - res://c:\programmi\google\GoogleToolbar3.dll/cmbacklinks.html
O8 - Extra context menu item: Pagine simili - res://c:\programmi\google\GoogleToolbar3.dll/cmsimilar.html
O8 - Extra context menu item: Versione cache della pagina - res://c:\programmi\google\GoogleToolbar3.dll/cmcache.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_04\bin\npjpi150_04.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_04\bin\npjpi150_04.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
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
O12 - Plugin for .pdf: C:\Programmi\Internet Explorer\PLUGINS\nppdf32.dll
O16 - DPF: {11260943-421B-11D0-8EAC-0000C07D88CF} (iPIX ActiveX Control) - http://www.burj-al-arab.com/flashcab/ipix/ipixx.cab
O16 - DPF: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) - http://security.symantec.com/sscv6/SharedContent/vc/bin/AvSniff.cab
O16 - DPF: {31B7EB4E-8B4B-11D1-A789-00A0CC6651A8} (Cult3D ActiveX Player) - http://www.cult3d.com/download/cult.cab
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) - http://security.symantec.com/sscv6/SharedContent/common/bin/cabsa.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/MsnMessengerSetupDownloader.cab
O16 - DPF: {DF780F87-FF2B-4DF8-92D0-73DB16A1543A} (PopCapLoader Object) - http://arcade.icq.com/carlo/zuma/popcaploader_v5.cab
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O23 - Service: Adobe LM Service - Unknown owner - C:\Programmi\File comuni\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: AntiVir Service (AntiVirService) - H+BEDV Datentechnik GmbH - C:\PROGRAMMI\AVPERSONAL\AVGUARD.EXE
O23 - Service: AntiVir Update (AVWUpSrv) - H+BEDV Datentechnik GmbH, Germany - C:\Programmi\AVPersonal\AVWUPSRV.EXE
O23 - Service: MySql - Unknown owner - C:/mysql/bin/mysqld-nt.exe
O23 - Service: ISC BIND (named) - Unknown owner - C:\WINDOWS\System32\dns\bin\named.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\SNDSrvc.exe

Ciao ,
esegui queste operazioni

1) Disattiva il ripristino di configurazione, leggi qui come fare
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=257&SH=N

2) riavvia in modalità provvisoria, leggi qui come fare
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=344&SH=N

apri HIJAC THIS ed elimina come indicato in questo articolo
http://www.aiutamici.com/software/descrizione.asp?CodSw=1175
le righe che seguono, (nel caso le righe da eliminare non compaiono in modalità provvisoria, eliminale dalla modalità normale e riavvia il computer).

==================================
O4 - HKLM\..\Run: [win3208561027583] C:\WINDOWS\win3208561027583.exe
-
O4 - HKCU\..\Run: [Kazaa All-In-One] C:\Programmi\Kazaa All-In-One\Kazaa-All-In-One.exe
==================================

Con la funzione TROVA di Windows, cerca ed elimina questi file,

==================================
win3208561027583.exe
Kazaa-All-In-One.exe
==================================


Vai a PANNELLO DI CONTROLLO e clicca su OPZIONI INTERNET
nella finestra che si apre clicca i tre pulsanti
ELIMINA COOKIES - ELIMINA FILE - CANCELLA CRONOOLOGIA

al termine utilizza i programmi AD-AWARE e SPYBOT indicati in questo articolo
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=388&SH=N

Fai una scansione con questo programma
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=1286

sempre in modalità provvisoria fai una scansione Antivirus

quindi riavvia il computer e controlla se il problema e risolto, se e tutto OK riattiva il ripristino configurazione disattivato all'inizio di questa procedura.

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Collaboratore Aiutamici