[Explorer.exe] UC à 100%

merci pour ton aide et tes conseils, tout fonctionne normalement maintenant !!!

Salut, merci encore pour ton aide.
J'ai suivi toutes les manips que tu m'as indiqué. Par contre dsl pour le fichier report.txt, quand le pc a redemarré, il a "freezer", et je n'ai pu copier/coller le fichier... Mais j'ai lu qu'il avait trouvé un explorer.exe.
Et c'est sans doute moi qui suis con mais je n'ai pas de fichier rapport_clean.txt sur la racine du C. J'ai lancé une recherche et il est pas sur mon disque...
Je te colle le nouveau rapport HiJack (moi j'ai l'impression que c'est bcp mieux, plus de explorer.exe qui bouffe toutes les ressources) :

Logfile of HijackThis v1.99.1
Scan saved at 19:48:26, on 18/11/2006
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

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:\WINDOWS\system32\LEXBCES.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\LEXPPS.EXE
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\WINDOWS\System32\ezSP_Px.exe
C:\WINDOWS\System32\ICO.EXE
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\Sony\HotKey Utility\HKserv.exe
C:\Program Files\sony\vaio power management\SPMgr.exe
C:\WINDOWS\System32\LVCOMSX.EXE
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\Program Files\Java\jre1.5.0_08\bin\jusched.exe
C:\Program Files\Sony\HotKey Utility\HKWnd.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpotdd01.exe
C:\Program Files\Sunbelt Software\Personal Firewall\kpf4ss.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Fichiers communs\Ulead Systems\DVD\ULCDRSvr.exe
C:\Program Files\Sunbelt Software\Personal Firewall\kpf4gui.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\Program Files\Sunbelt Software\Personal Firewall\kpf4gui.exe
C:\Documents and Settings\Stev\Bureau\HijackThis.exe

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.club-vaio.sony-europe.com/
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Internet Explorer avec Club-Internet
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = 172.187.55.26:6588
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = 127.0.0.1
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: (no name) - {02DCA195-602B-4B1F-83FF-381B7E804BDB} - C:\WINDOWS\system32\HDBHO.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {4377372A-10A2-44C8-9502-670F55973F21} - C:\WINDOWS\System32\nnllm.dll
O2 - BHO: (no name) - {46A4E9D9-B30E-452A-8157-DBBEC8573B03} - C:\Program Files\VSAdd-in\VSAdd-in.dll
O2 - BHO: (no name) - {64F56FC1-1272-44CD-BA6E-39723696E350} - (no file)
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_08\bin\ssv.dll
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: (no name) - {9A36CEDC-2619-43F0-8108-50A321AD3057} - C:\WINDOWS\System32\opnnnnm.dll
O2 - BHO: XBTB01232 Class - {BBBE1C1A-89F7-4AF6-ABD1-F8FBCFA47408} - (no file)
O2 - BHO: (no name) - {F18F04B0-9CF1-4b93-B004-77A288BEE28B} - (no file)
O2 - BHO: (no name) - {FFFFFEF0-5B30-21D4-945D-000000000000} - C:\PROGRA~1\STARDO~1\SDIEInt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: (no name) - {CC8C8F4F-F2E8-404B-A43D-5CC57876A008} - (no file)
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: &VSAdd-in - {74DD705D-6834-439C-A735-A6DBE2677452} - C:\Program Files\VSAdd-in\VSAdd-in.dll
O4 - HKLM\..\Run: [ezShieldProtector for Px] C:\WINDOWS\System32\ezSP_Px.exe
O4 - HKLM\..\Run: [Mouse Suite 98 Daemon] ICO.EXE
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
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: [LVCOMSX] C:\WINDOWS\System32\LVCOMSX.EXE
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.5.0_08\bin\jusched.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - Global Startup: hpoddt01.exe.lnk = ?
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: &Search - http://bar.mywebsearch.com/menusearch.html?p=ZN
O8 - Extra context menu item: Download with Star Downloader - C:\Program Files\Star Downloader\sdie.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: Enqueue in Star Downloader - C:\Program Files\Star Downloader\sdieenq.htm
O8 - Extra context menu item: Leech with Star Downloader - C:\Program Files\Star Downloader\leechie.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra button: Allocam Multi Vision - {2D6B57BF-71FA-41A3-BDC5-3B5A25813D2E} - C:\WINDOWS\System32\shdocvw.dll
O9 - Extra 'Tools' menuitem: Allocam Multi Vision - {2D6B57BF-71FA-41A3-BDC5-3B5A25813D2E} - C:\WINDOWS\System32\shdocvw.dll
O9 - Extra button: Messenger - {4528BBE0-4E08-11D5-AD55-00010333D0AD} - C:\PROGRA~1\Yahoo!\Common\yhexbmesfr.dll
O9 - Extra 'Tools' menuitem: Yahoo! Messenger - {4528BBE0-4E08-11D5-AD55-00010333D0AD} - C:\PROGRA~1\Yahoo!\Common\yhexbmesfr.dll
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\WINDOWS\System32\shdocvw.dll
O9 - Extra 'Tools' menuitem: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\WINDOWS\System32\shdocvw.dll
O14 - IERESET.INF: START_PAGE_URL=http://www.club-vaio.sony-europe.com/
O15 - Trusted Zone: *.sony-europe.com
O15 - Trusted Zone: *.sonystyle-europe.com
O15 - Trusted Zone: *.vaio-link.com
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {5ED80217-570B-4DA9-BF44-BE107C0EC166} (Windows Live Safety Center Base Module) - http://cdn.scan.safety.live.com/resource/download/scanner/wlscbase8460.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - https://www.trendmicro.com/en_us/forHome/products/housecall.html
O16 - DPF: {952F9A71-131A-11D5-8404-00500445A7D0} (ActiveMiniplug Class) - https://intranet.unss.org/plugins/mplugax.cab
O16 - DPF: {BB21F850-63F4-4EC9-BF9D-565BD30C9AE9} (ASquaredScanForm Element) - http://techgenix.com/security/
O17 - HKLM\System\CCS\Services\Tcpip\..\{1052D3CE-A93D-46FD-9ACE-70D87629DA2B}: NameServer = 87.240.17.254
O17 - HKLM\System\CS1\Services\Tcpip\..\{1052D3CE-A93D-46FD-9ACE-70D87629DA2B}: NameServer = 87.240.17.254
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: talkto - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O20 - Winlogon Notify: nnllm - C:\WINDOWS\System32\nnllm.dll
O20 - Winlogon Notify: opnnnnm - C:\WINDOWS\SYSTEM32\opnnnnm.dll
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\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: avast! Antivirus - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPod Service - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Sunbelt Kerio Personal Firewall 4 (KPF4) - Sunbelt Software - C:\Program Files\Sunbelt Software\Personal Firewall\kpf4ss.exe
O23 - Service: LexBce Server (LexBceS) - Lexmark International, Inc. - C:\WINDOWS\system32\LEXBCES.EXE
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\System32\HPZipm12.exe
O23 - Service: Sony SPTI Service (SPTISRV) - Sony Corporation - C:\Program Files\Fichiers communs\Sony Shared\AVLib\Sptisrv.exe
O23 - Service: Ulead Burning Helper (UleadBurningHelper) - Ulead Systems, Inc. - C:\Program Files\Fichiers communs\Ulead Systems\DVD\ULCDRSvr.exe
O23 - Service: VAIO Media Music Server (VAIOMediaPlatform-MusicServer-AppServer) - Unknown owner - C:\Program Files\sony\vaio media music server\SSSvr.exe" /Service=VAIOMediaPlatform-MusicServer-AppServer /DisplayName="VAIO Media Music Server (file missing)
O23 - Service: VAIO Media Music Server (HTTP) (VAIOMediaPlatform-MusicServer-HTTP) - Unknown owner - C:\Program Files\Fichiers communs\Sony Shared\vaio media platform\sv_httpd.exe" /Service=VAIOMediaPlatform-MusicServer-HTTP /RegRoot="Software\Sony Corporation\VAIO Media Platform\2.0" /RegExt="Applications\MusicServer\HTTP (file missing)
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) - Unknown owner - C:\Program Files\Fichiers communs\sony shared\vaio media platform\SV_Httpd.exe" /Service=VAIOMediaPlatform-PhotoServer-HTTP /RegRoot="Software\Sony Corporation\VAIO Media Platform\2.0" /RegExt="\Applications\PhotoServer\HTTP (file missing)
O23 - Service: VAIO Media Photo Server (UPnP) (VAIOMediaPlatform-PhotoServer-UPnP) - Sony Corporation - C:\Program Files\Fichiers communs\sony shared\vaio media platform\UPnPFramework.exe

PS : merci encore pour le temps que tu me donnes. Il me reste des manips a faire ? Et sinon pour eviter de deranger tout le temps les gens et peut etre aider a mon tour, quelle partie du rapport Hijack t'as permis de dire que j'étais infecté ? Il existe un tuto ?
Encore une derniere question si je peux me permettre, que me conseils tu pour me proteger efficacement ? J'ai utilisé Zone ALarm pro, j'ai trouvé trop lourd, puis Kerio, et la version free de Avast... Que choisir ?