Salut !
Voila mon problème, mon frère s'est balladé sur des sites de warez, cr*ck, et son pc est tout infecté. Et qui c'est qui se tape la désinfection, moi... 
Donc voila, j'ai un trojan horse qui n'arrive pas a se faire supprimer par antivir.
Antivir me dit qu'il est dans C:/WINDOWS/system32/clbdll.dll
et que c'est le trojan horse TR/Agent.45056.136
Voici un scan hijackthis.
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 11:58:44, on 13.07.2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
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:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\WINDOWS\system32\PnkBstrA.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\Program Files\Java\jre1.6.0_03\bin\jusched.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\ATI Technologies\ATI.ACE\CLI.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Avira\AntiVir PersonalEdition Classic\avguard.exe
C:\Program Files\Avira\AntiVir PersonalEdition Classic\avgnt.exe
C:\Program Files\Avira\AntiVir PersonalEdition Classic\sched.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\WINDOWS\system32\rundll32.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe
R1 - HKLM\Software\Microsoft\Internet Explorer,SearchURL = http://internetsearchservice.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.ch/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://fr.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://internetsearchservice.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://internetsearchservice.com/ie6.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://internetsearchservice.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://internetsearchservice.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: SSVHelper Class - {761497bb-d6f0-462c-b6eb-d4daf1d92d43} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.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
O3 - Toolbar: Easy-WebPrint - {327C2873-E90D-4c37-AA9D-10AC9BABA46C} - C:\Program Files\Canon\Easy-WebPrint\Toolband.dll
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [ATICCC] "C:\Program Files\ATI Technologies\ATI.ACE\cli.exe" runtime
O4 - HKLM\..\Run: [farstone] NULL
O4 - HKLM\..\Run: [RestoreIT!] "C:\Program
Files\FarStone\RestoreIT!\RestoreIT!_XP\VBPTASK.EX
E" VBStart
O4 - HKLM\..\Run: [High Definition Audio Property Page Shortcut] HDAShCut.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_05\bin\jusched.exe"
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\AntiVir PersonalEdition Classic\avgnt.exe" /min
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'Default user')
O4 - HKUS\.DEFAULT\..\Run: [] (User 'Default user')
O4 - HKUS\.DEFAULT\..\Run: [ATICCC] "C:\Program Files\ATI Technologies\ATI.ACE\cli.exe" runtime (User 'Default user')
O4 - Startup: Yahoo! Widget Engine.lnk = C:\Program Files\Yahoo!\Widgets\YahooWidgetEngine.exe
O4 - Global Startup: ATI CATALYST System Tray.lnk = C:\Program Files\ATI Technologies\ATI.ACE\CLI.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O8 - Extra context menu item: Add to Windows &Live Favorites - http://favorites.live.com/quickadd.aspx
O8 - Extra context menu item: E&xporter vers Microsoft Excel -
res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Easy-WebPrint Ajouter à la liste d'impressions - res://C:\Program
Files\Canon\Easy-WebPrint\Resource.dll/RC_AddToLis
t.html
O8 - Extra context menu item: Easy-WebPrint Impression rapide - res://C:\Program
Files\Canon\Easy-WebPrint\Resource.dll/RC_HSPrint.
html
O8 - Extra context menu item: Easy-WebPrint Imprimer - res://C:\Program
Files\Canon\Easy-WebPrint\Resource.dll/RC_Print.ht
ml
O8 - Extra context menu item: Easy-WebPrint Prévisualiser - res://C:\Program
Files\Canon\Easy-WebPrint\Resource.dll/RC_Preview.
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: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
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
O11 - Options group: [java_sun] Java (Sun)
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: {20A60F0D-9AFA-4515-A0FD-83BD84642501} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab56986.cab
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (Installation Support) - C:\Program Files\Yahoo!\Common\Yinsthelper.dll
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://by106fd.bay106.hotmail.msn.com/resources/MsnPUpld.cab
O16 - DPF: {5C051655-FCD5-4969-9182-770EA5AA5565} (Solitaire Showdown Class) - http://messenger.zone.msn.com/binary/SolitaireShowdown.cab56986.cab
O16 - DPF: {5D6F45B3-9043-443D-A792-115447494D24} (UnoCtrl Class) - http://messenger.zone.msn.com/FR-CH/a-UNO1/GAME_UNO1.cab
O16 - DPF: {B8BE5E93-A60C-4D26-A2DC-220313175592} (MSN Games - Installer) - http://messenger.zone.msn.com/binary/ZIntro.cab56649.cab
O16 - DPF: {BD393C14-72AD-4790-A095-76522973D6B8} (CBreakshotControl Class) - http://messenger.zone.msn.com/binary/Bankshot.cab57213.cab
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab56907.cab
O16 - DPF: {F5A7706B-B9C0-4C89-A715-7A0C6B05DD48} (Minesweeper Flags Class) - http://messenger.zone.msn.com/binary/MineSweeper.cab56986.cab
O20 - Winlogon Notify: crypt - C:\WINDOWS\SYSTEM32\crypts.dll
O20 - Winlogon Notify: winctrl32 - C:\WINDOWS\SYSTEM32\WinCtrl32.dll
O20 - Winlogon Notify: winemx32 - C:\WINDOWS\SYSTEM32\winemx32.dll
O20 - Winlogon Notify: wlctrl32 - WLCtrl32.dll (file missing)
O23 - Service: Avira AntiVir Personal – Free Antivirus Scheduler (antivirscheduler) - Avira GmbH - C:\Program Files\Avira\AntiVir PersonalEdition Classic\sched.exe
O23 - Service: Avira AntiVir Personal – Free Antivirus Guard (antivirservice) - Avira GmbH - C:\Program Files\Avira\AntiVir PersonalEdition Classic\avguard.exe
O23 - Service: Apple Mobile Device - Apple, Inc. - C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: PnkBstrA - Unknown owner - C:\WINDOWS\system32\PnkBstrA.exe
--
End of file - 7754 bytes
Merci d'avance et bonne après midi.
