Nel registro di sistema il programma Malwarebytes rileva il file
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Window NT\CurrentVersion\Network\UID come malware trace.
Non riesco a rimuovere l'intruso perchè dopo la cancellazione viene ricreato.
Allego il log di hijack.
Ringrazio anticipatamente.


Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 21.21.00, on 25/08/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16705)
Boot mode: Normal

Running processes:
C:\WINDOWS\system32\csrss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\Programmi\Windows Defender\MsMpEng.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\Programmi2\Alwil Software\Avast4\aswUpdSv.exe
C:\Programmi2\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Programmi2\a-squared Anti-Dialer\a2service.exe
C:\Programmi\File comuni\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\PROGRA~1\ESRI\License\arcgis9x\lmgrd.exe
C:\Programmi\File comuni\EPSON\EBAPI\SAgent2.exe
C:\PROGRA~1\ESRI\License\arcgis9x\ARCGIS.EXE
C:\WINDOWS\system32\svchost.exe
C:\Programmi2\Alwil Software\Avast4\ashMaiSv.exe
C:\Programmi2\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\System32\alg.exe
C:\WINDOWS\system32\wscntfy.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\RunDll32.exe
C:\Programmi\File comuni\PCSuite\DataLayer\DataLayer.exe
C:\Programmi\Nokia\Nokia PC Suite 6\LaunchApplication.exe
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S10IC2.EXE
C:\Programmi\QuickTime\QTTask.exe
C:\PROGRA~2\ALWILS~1\Avast4\ashDisp.exe
C:\Programmi2\a-squared Anti-Dialer\a2adguard.exe
C:\Programmi\Conexant\AccessRunner ADSL\CnxDslTb.exe
C:\Programmi\Adobe\Photoshop Album Starter Edition\3.2\Apps\apdproxy.exe
C:\WINDOWS\vsnpstd.exe
C:\Programmi\iTunes\iTunesHelper.exe
C:\Programmi\Windows Defender\MSASCui.exe
C:\WINDOWS\system32\ctfmon.exe
C:\PROGRA~1\FILECO~1\PCSuite\Services\SERVIC~1.EXE
C:\Programmi\iPod\bin\iPodService.exe
C:\Programmi\Windows Live\Messenger\msnmsgr.exe
C:\Programmi\Windows Live\Messenger\usnsvc.exe
C:\Programmi\Mozilla Firefox\firefox.exe
C:\Programmi2\Malwarebytes' Anti-Malware\mbam.exe
C:\Programmi2\Trend Micro\HijackThis\HijackThis.exe
C:\WINDOWS\system32\wbem\wmiprvse.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
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.it/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
F2 - REG:system.ini: UserInit=C:\WINDOWS\system32\Userinit.exe,C:\WINDOWS\system32\oembios.exe,
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Programmi\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Supporto di collegamento per Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\File comuni\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: Skype add-on (mastermind) - {22BF413B-C6D2-4d91-82A9-A0F997BA588C} - C:\Programmi2\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.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: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\programmi\google\googletoolbar4.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Programmi\Google\GoogleToolbarNotifier\2.1.1119.1736\swg.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Programmi\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\programmi\google\googletoolbar4.dll
O4 - HKLM\..\Run: [Collegamento alla pagina delle proprietà di High Definition Audio] HDAShCut.exe
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [DataLayer] C:\Programmi\File comuni\PCSuite\DataLayer\DataLayer.exe
O4 - HKLM\..\Run: [PCSuiteTrayApplication] C:\Programmi\Nokia\Nokia PC Suite 6\LaunchApplication.exe -onlytray
O4 - HKLM\..\Run: [EPSON Stylus C42 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S10IC2.EXE /P23 "EPSON Stylus C42 Series" /O6 "USB001" /M "Stylus C42"
O4 - HKLM\..\Run: [BearShare] "C:\Programmi\BearShare\BearShare.exe" /pause
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programmi\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [avast!] C:\PROGRA~2\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [a-squared Anti-Dialer] "C:\Programmi2\a-squared Anti-Dialer\a2adguard.exe"
O4 - HKLM\..\Run: [CnxDslTaskBar] C:\Programmi\Conexant\AccessRunner ADSL\CnxDslTb.exe
O4 - HKLM\..\Run: [Adobe Photo Downloader] "C:\Programmi\Adobe\Photoshop Album Starter Edition\3.2\Apps\apdproxy.exe"
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Programmi\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [snpstd] C:\WINDOWS\vsnpstd.exe
O4 - HKLM\..\Run: [AppleSyncNotifier] C:\Programmi\File comuni\Apple\Mobile Device Support\bin\AppleSyncNotifier.exe
O4 - HKLM\..\Run: [iTunesHelper] "C:\Programmi\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [Windows Defender] "C:\Programmi\Windows Defender\MSASCui.exe" -hide
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
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')
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: Skype - {77BF5300-1474-4EC7-9980-D32B190E9B07} - C:\Programmi2\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://chiari85.spaces.live.com//PhotoUpload/MsnPUpld.cab
O16 - DPF: {76A2A0AB-38B7-46DB-8E47-F10CDE4D7920} - http://www.cartografia.regione.lombardia.it/include/ecwplugins/ncs.cab
O16 - DPF: {7FC1B346-83E6-4774-8D20-1A6B09B0E737} (Windows Live Photo Upload Control) - http://chiari85.spaces.live.com/PhotoUpload/MsnPUpld.cab
O16 - DPF: {D147430C-86CD-4E6F-A807-93FBC496D201} (NCSLayeredView Class) - http://www.urbanisticaecasa.regione.lazio.it/ecwplugins/ncs.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{1EBC8F14-0542-4064-BF55-C66B75A594F0}: NameServer = 193.12.150.2 212.247.152.2
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FILECO~1\Skype\SKYPE4~1.DLL
O23 - Service: a-squared Anti-Dialer Service (a2AntiDialer) - Emsi Software GmbH - C:\Programmi2\a-squared Anti-Dialer\a2service.exe
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Programmi\File comuni\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: ArcGIS License Manager - Unknown owner - C:\PROGRA~1\ESRI\License\arcgis9x\lmgrd.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Programmi2\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: Autodesk Licensing Service - Autodesk - C:\Programmi\File comuni\Autodesk Shared\Service\AdskScSrv.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Programmi2\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Programmi2\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Programmi2\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: EPSON Printer Status Agent2 (EPSONStatusAgent2) - SEIKO EPSON CORPORATION - C:\Programmi\File comuni\EPSON\EBAPI\SAgent2.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Programmi\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Programmi\File comuni\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: Servizio iPod (iPod Service) - Apple Inc. - C:\Programmi\iPod\bin\iPodService.exe

--
End of file - 8828 bytes

fai una scansione con kaspersky online

http://www.kaspersky.com/virusscanner

nella scansione scegli MY COMPUTER quando sara' finita posta il log

ti avevo consigliato una scansione con kaspersky...perche' non l'hai fatta? in questo modo massacri solo il registro