Problème rootkit-gen et autres virus

Bonjour,

Avast me signale au démarrage de XP un problème avec un rootkit-gen, aussi identifié par G Data.
Ce dernier me signale aussi le virus Win32:PrivacySet.

Je n'arrive pas à me défaire de ces rootkits et autres trojan, malgré Spybot, G Data etc.

Merci de votre aide, je commence à désespérer.

Ci-dessous le rapport de HiJack:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 22:57:18, on 18/05/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16640)
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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Tools\Avast Antivirus\aswUpdSv.exe
C:\Program Files\Tools\Avast Antivirus\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Apoint\Apoint.exe
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\WINDOWS\ATK0100\Hcontrol.exe
C:\WINDOWS\system32\ICO.EXE
C:\WINDOWS\system32\rundll32.exe
C:\Program Files\Sony\HotKey Utility\HKserv.exe
C:\Program Files\sony\vaio power management\SPMgr.exe
C:\Program Files\Sony\ISB Utility\ISBMgr.exe
C:\Program Files\Java\jre1.6.0_05\bin\jusched.exe
C:\Program Files\Sony\Wireless Switch Setting Utility\Switcher.exe
C:\PROGRA~1\Tools\AVASTA~1\ashDisp.exe
C:\Program Files\Zik\iTunes\iTunesHelper.exe
C:\WINDOWS\VM_STI.EXE
C:\Program Files\G DATA AntiVirus Trial\AVKTray\AVKTray.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\Program Files\G DATA AntiVirus Trial\AVK\AVKService.exe
C:\Program Files\G DATA AntiVirus Trial\AVK\AVKWCtl.exe
C:\WINDOWS\ATK0100\ATKOSD.exe
C:\Program Files\Webshots\WebshotsTray.exe
C:\Program Files\Sony\HotKey Utility\HKWnd.exe
C:\Program Files\Apoint\Apntex.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Fichiers communs\G DATA\AVKProxy\AVKProxy.exe
C:\Program Files\Tools\Avast Antivirus\ashMaiSv.exe
C:\Program Files\Tools\Avast Antivirus\ashWebSv.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\WINDOWS\system32\wscntfy.exe
C:\Program Files\Windows Desktop Search\WindowsSearchIndexer.exe
C:\Program Files\Net\Avant Browser\avant.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://outlook.live.com/owa/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.msn.com/fr-fr/?ocid=iehp
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.msn.com/fr-fr/?ocid=iehp
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = https://www.bing.com/?FORM=TOOLBR&cc=fr&toHttps=1&redig=4527FFF1C12746FC9EDB535C75E80ECC
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://www.club-vaio.sony-europe.com/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: G DATA WebFilter Class - {0124123d-61b4-456f-af86-78c53a0790c5} - C:\Program Files\G DATA AntiVirus Trial\Webfilter\AvkWebIE.dll
O2 - BHO: dsWebAllowBHO Class - {2F85D76C-0569-466F-A488-493E6BD0E955} - C:\Program Files\Windows Desktop Search\dsWebAllow.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6f74-2d53-2644-206d7942484f} - C:\Program Files\Tools\Spybot\SDHelper.dll
O2 - BHO: (no name) - {6d794cb4-c7cd-4c6f-bfdc-9b77afbdc02c} - C:\WINDOWS\system32\nnnnKcBu.dll (file missing)
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O2 - BHO: (no name) - {7a0725cf-fbd4-4dac-a3a9-b3a0d978b195} - C:\WINDOWS\system32\wvUlifGX.dll
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: (no name) - {a4d06418-dee1-4c50-bdfd-73de65d7b27b} - (no file)
O2 - BHO: (no name) - {AA58ED58-01DD-4d91-8333-CF10577473F7} - (no file)
O2 - BHO: Windows Live Toolbar Helper - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\Windows Live Toolbar\msntb.dll
O2 - BHO: {2ef5d9a4-b4fc-1a7a-b164-e130c4292a1f} - {f1a2924c-031e-461b-a7a1-cf4b4a9d5fe2} - C:\WINDOWS\system32\vhxdkula.dll
O3 - Toolbar: (no name) - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - (no file)
O3 - Toolbar: Windows Live Toolbar - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\Windows Live Toolbar\msntb.dll
O3 - Toolbar: Easy-WebPrint - {327C2873-E90D-4c37-AA9D-10AC9BABA46C} - C:\Program Files\Canon\Easy-WebPrint\Toolband.dll
O3 - Toolbar: G DATA WebFilter - {0124123D-61B4-456f-AF86-78C53A0790C5} - C:\Program Files\G DATA AntiVirus Trial\Webfilter\AvkWebIE.dll
O4 - HKLM\..\Run: [Apoint] C:\Program Files\Apoint\Apoint.exe
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [Hcontrol] C:\WINDOWS\ATK0100\Hcontrol.exe
O4 - HKLM\..\Run: [Mouse Suite 98 Daemon] ICO.EXE
O4 - HKLM\..\Run: [BluetoothAuthenticationAgent] rundll32.exe irprops.cpl,,BluetoothAuthenticationAgent
O4 - HKLM\..\Run: [HKSERV.EXE] C:\Program Files\Sony\HotKey Utility\HKserv.exe
O4 - HKLM\..\Run: [SonyPowerCfg] C:\Program Files\sony\vaio power management\SPMgr.exe
O4 - HKLM\..\Run: [ISBMgr.exe] C:\Program Files\Sony\ISB Utility\ISBMgr.exe
O4 - HKLM\..\Run: [Drag'n Drop CD+DVD] C:\Program Files\drag'n drop cd+dvd\BinFiles\DragDrop.exe /StartUp
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_05\bin\jusched.exe"
O4 - HKLM\..\Run: [Switcher.exe] C:\Program Files\Sony\Wireless Switch Setting Utility\Switcher.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\Tools\AVASTA~1\ashDisp.exe
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\Zik\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [BigDogPath] C:\WINDOWS\VM_STI.EXE VIMICRO USB PC Camera 301x
O4 - HKLM\..\Run: [AVKTray] "C:\Program Files\G DATA AntiVirus Trial\AVKTray\AVKTray.exe"
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [updateMgr] "C:\Program Files\Adobe\Acrobat 7.0\Reader\AdobeUpdateManager.exe" AcRdB7_0_9 -reboot 1
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'Default user')
O4 - HKUS\.DEFAULT\..\Run: [Picasa Media Detector] C:\Program Files\Photo\Picasa2\PicasaMediaDetector.exe (User 'Default user')
O4 - Startup: Webshots.lnk = C:\Program Files\Webshots\WebshotsTray.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: &Traduire à partir de l'anglais - res://c:\program files\google\GoogleToolbar1.dll/cmwordtrans.html
O8 - Extra context menu item: &Windows Live Search - res://C:\Program Files\Windows Live Toolbar\msntb.dll/search.htm
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~3\Office10\EXCEL.EXE/3000
O8 - Extra context menu item: Easy-WebPrint Ajouter à la liste d'impressions - res://C:\Program Files\Canon\Easy-WebPrint\Toolband.dll/RC_AddToList.html
O8 - Extra context menu item: Easy-WebPrint Impression rapide - res://C:\Program Files\Canon\Easy-WebPrint\Toolband.dll/RC_HSPrint.html
O8 - Extra context menu item: Easy-WebPrint Imprimer - res://C:\Program Files\Canon\Easy-WebPrint\Toolband.dll/RC_Print.html
O8 - Extra context menu item: Easy-WebPrint Prévisualiser - res://C:\Program Files\Canon\Easy-WebPrint\Toolband.dll/RC_Preview.html
O8 - Extra context menu item: Pages liées - res://c:\program files\google\GoogleToolbar1.dll/cmbacklinks.html
O8 - Extra context menu item: Pages similaires - res://c:\program files\google\GoogleToolbar1.dll/cmsimilar.html
O8 - Extra context menu item: Recherche &Google - res://c:\program files\google\GoogleToolbar1.dll/cmsearch.html
O8 - Extra context menu item: Version de la page actuelle disponible dans le cache Google - res://c:\program files\google\GoogleToolbar1.dll/cmcache.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O9 - Extra button: Ajout Direct - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: &Ajout Direct dans Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: (no name) - {dfb852a3-47f8-48c4-a200-58cab36fd2a2} - C:\Program Files\Tools\Spybot\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search && Destroy Configuration - {dfb852a3-47f8-48c4-a200-58cab36fd2a2} - C:\Program Files\Tools\Spybot\SDHelper.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:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O14 - IERESET.INF: START_PAGE_URL=http://www.club-vaio.sony-europe.com/
O16 - DPF: {3BFFE033-BF43-11D5-A271-00A024A51325} (iNotes6 Class) - http://mail.sophis.net/iNotes6W.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://gfx1.hotmail.com/mail/w2/pr02/resources/MSNPUpld.cab
O16 - DPF: {5C6698D9-7BE4-4122-8EC5-291D84DBD4A0} (Facebook Photo Uploader 4 Control) - http://upload.facebook.com/controls/FacebookPhotoUploader3.cab
O16 - DPF: {5F8469B4-B055-49DD-83F7-62B522420ECC} (Facebook Photo Uploader Control) - http://upload.facebook.com/controls/FacebookPhotoUploader.cab
O16 - DPF: {62475759-9E84-458E-A1AB-5D2C442ADFDE} - http://a1540.g.akamai.net/7/1540/52/20040428/qtinstall.info.apple.com/saba/fr/win/QuickTimeInstaller.exe
O20 - Winlogon Notify: nnnnkcbu - nnnnKcBu.dll (file missing)
O23 - Service: Apple Mobile Device - Apple, Inc. - C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Tools\Avast Antivirus\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Tools\Avast Antivirus\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Tools\Avast Antivirus\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Tools\Avast Antivirus\ashWebSv.exe
O23 - Service: G DATA AntiVirus Proxy (avkproxy) - G DATA Software AG - C:\Program Files\Fichiers communs\G DATA\AVKProxy\AVKProxy.exe
O23 - Service: G DATA Scheduler (avkservice) - G DATA Software AG - C:\Program Files\G DATA AntiVirus Trial\AVK\AVKService.exe
O23 - Service: Gardien d'AntiVirus (avkwctl) - G DATA Software AG - C:\Program Files\G DATA AntiVirus Trial\AVK\AVKWCtl.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Service de l'iPod (iPod Service) - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: License Management Service ESD - element5 - C:\Program Files\Fichiers communs\element5 Shared\Service\Licence Manager ESD.exe
O23 - Service: OZNAF (oznaf) - Sysinternals - www.sysinternals.com - C:\DOCUME~1\Pierre\LOCALS~1\Temp\OZNAF.exe
O23 - Service: PACSPTISVR - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\PACSPTISVR.exe
O23 - Service: Sony SPTI Service (SPTISRV) - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\SPTISRV.exe
O23 - Service: VAIO Media Music Server (VAIOMediaPlatform-MusicServer-AppServer) - Sony Corporation - C:\Program Files\sony\vaio media music server\SSSvr.exe
O23 - Service: VAIO Media Music Server (HTTP) (VAIOMediaPlatform-MusicServer-HTTP) - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\vaio media platform\sv_httpd.exe
O23 - Service: VAIO Media Music Server (UPnP) (VAIOMediaPlatform-MusicServer-UPnP) - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\vaio media platform\UPnPFramework.exe
O23 - Service: VAIO Media Photo Server (VAIOMediaPlatform-PhotoServer-AppServer) - Sony Corporation - C:\Program Files\sony\photo server\appsrv\PhotoAppSrv.exe
O23 - Service: VAIO Media Photo Server (HTTP) (VAIOMediaPlatform-PhotoServer-HTTP) - Sony Corporation - C:\Program Files\Fichiers communs\sony shared\vaio media platform\SV_Httpd.exe
O23 - Service: VAIO Media Photo Server (UPnP) (VAIOMediaPlatform-PhotoServer-UPnP) - Sony Corporation - C:\Program Files\Fichiers communs\sony shared\vaio media platform\UPnPFramework.exe