Infection par win32:Agent-HDR[trj]

salut
je demande votre aide

mon pc est infecté par un cheval de troie win32:Agent-HDR[trj]. il est detecté par avast mais il n'arrive pas à le supprimer
voici le logfile de HijackThis
Scan saved at 15:17:37, on 29/05/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
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\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\oracle\ora92\bin\omtsreco.exe
C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\RoxMediaDB.exe
C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\RoxWatch.exe
C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\AGRSMMSG.exe
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Roxio\Easy Media Creator 8\Drag to Disc\DrgToDsc.exe
C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\RoxWatchTray.exe
C:\WINDOWS\system32\avp.exe
C:\WINDOWS\retadpu173.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Microsoft Encarta\Collection Microsoft Encarta 2006\EDICT.EXE
C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\CPSHelpRunner.exe
C:\Program Files\Microsoft Office\OFFICE11\WINWORD.EXE
C:\WINDOWS\system32\osk.exe
C:\WINDOWS\system32\MSSWCHX.EXE
C:\Program Files\Mozilla Firefox\firefox.exe
C:\securite\hijackthis\HiJackThis_v2.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = wmplayer.exe //ICWLaunch
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: Aide pour le lien d'Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: BHO pour Compagnon Web Encarta - {955BE0B8-BC85-4CAF-856E-8E0D8B610560} - C:\Program Files\Fichiers communs\Microsoft Shared\Encarta Web Companion\ENCWCBAR.DLL
O3 - Toolbar: Compagnon Web Encarta - {147D6308-0614-4112-89B1-31402F9B82C4} - C:\Program Files\Fichiers communs\Microsoft Shared\Encarta Web Companion\ENCWCBAR.DLL
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [SetRefresh] C:\Program Files\Compaq\SetRefresh\SetRefresh.exe
O4 - HKLM\..\Run: [Conjugaison] C:\Documents and Settings\MOURAD\Bureau\Education + Enfants\conjugaison\conjLauncher.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [RoxioDragToDisc] "C:\Program Files\Roxio\Easy Media Creator 8\Drag to Disc\DrgToDsc.exe"
O4 - HKLM\..\Run: [RoxWatchTray] "C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\RoxWatchTray.exe"
O4 - HKLM\..\Run: [McAfee Online Virus Scanner] avp.exe
O4 - HKLM\..\Run: [runner1] C:\WINDOWS\retadpu173.exe 61A847B5BBF728133598284503996897C881250221C8670836AC4FA7C88332017491394661A64DB7C8F0287E55E246220D9E728F80D6664366DB7D5775FA0FB68AD6
O4 - HKLM\..\RunServices: [McAfee Online Virus Scanner] avp.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [E06FDXRC_15351484] "C:\Program Files\Microsoft Encarta\Collection Microsoft Encarta 2006\EDICT.EXE" -m
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE RÉSEAU')
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')
O4 - Global Startup: Adobe Reader Synchronizer.lnk = C:\Program Files\Adobe\Reader 8.0\Reader\AdobeCollabSync.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Reader 8.0\Reader\reader_sl.exe
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0\bin\npjpi150.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0\bin\npjpi150.dll
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {B205A35E-1FC4-4CE3-818B-899DBBB3388C} - C:\Program Files\Fichiers communs\Microsoft Shared\Encarta Search Bar\ENCSBAR.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
O17 - HKLM\System\CCS\Services\Tcpip\..\{DB807EA9-C8B7-4562-AFF5-CCA38764006F}: NameServer = 193.95.75.10,193.95.75.13
O22 - SharedTaskScheduler: Pré-chargeur Browseui - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - C:\WINDOWS\system32\browseui.dll
O22 - SharedTaskScheduler: Démon de cache des catégories de composant - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\WINDOWS\system32\browseui.dll
O23 - Service: Adobe LM Service - Adobe Systems - C:\Program Files\Fichiers communs\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: Service d'administration du Gestionnaire de disque logique (dmadmin) - Unknown owner - C:\WINDOWS\System32\dmadmin.exe
O23 - Service: Journal des événements (Eventlog) - Unknown owner - C:\WINDOWS\system32\services.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: Service COM de gravage de CD IMAPI (ImapiService) - Unknown owner - C:\WINDOWS\system32\imapi.exe
O23 - Service: Partage de Bureau à distance NetMeeting (mnmsrvc) - Unknown owner - C:\WINDOWS\system32\mnmsrvc.exe
O23 - Service: OracleMTSRecoveryService - Oracle Corporation - C:\oracle\ora92\bin\omtsreco.exe
O23 - Service: OracleOraHome92ClientCache - Unknown owner - C:\oracle\ora92\BIN\ONRSD.EXE
O23 - Service: Plug-and-Play (PlugPlay) - Unknown owner - C:\WINDOWS\system32\services.exe
O23 - Service: Gestionnaire de session d'aide sur le Bureau à distance (RDSessMgr) - Unknown owner - C:\WINDOWS\system32\sessmgr.exe
O23 - Service: LiveShare P2P Server (RoxLiveShare) - Sonic Solutions - C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\RoxLiveShare.exe
O23 - Service: RoxMediaDB - Sonic Solutions - C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\RoxMediaDB.exe
O23 - Service: RoxUpnpRenderer (RoxUPnPRenderer) - Sonic Solutions - C:\Program Files\Fichiers communs\Roxio Shared\SharedCom\RoxUpnpRenderer.exe
O23 - Service: RoxUpnpServer - Sonic Solutions - C:\Program Files\Roxio\Easy Media Creator 8\Digital Home\RoxUpnpServer.exe
O23 - Service: Roxio Hard Drive Watcher (RoxWatch) - Sonic Solutions - C:\Program Files\Fichiers communs\Roxio Shared\SharedCOM8\RoxWatch.exe
O23 - Service: Carte à puce (SCardSvr) - Unknown owner - C:\WINDOWS\System32\SCardSvr.exe
O23 - Service: SoundMAX Agent Service (SoundMAX Agent Service (default)) - Analog Devices, Inc. - C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
O23 - Service: Journaux et alertes de performance (SysmonLog) - Unknown owner - C:\WINDOWS\system32\smlogsvc.exe
O23 - Service: Cliché instantané de volume (VSS) - Unknown owner - C:\WINDOWS\System32\vssvc.exe
O23 - Service: Carte de performance WMI (WmiApSrv) - Unknown owner - C:\WINDOWS\system32\wbem\wmiapsrv.exe
O23 - Service: Service Partage réseau du Lecteur Windows Media (WMPNetworkSvc) - Unknown owner - C:\Program Files\Windows Media Player\WMPNetwk.exe
O24 - Desktop Component 0: (no name) - file:///C:/Documents%20and%20Settings/AUDIT%20RIDHA/Bureau/Access sélection, opérateurs, fonctions, requête paramétrée_fichiers/arrow04ab.gif
O24 - Desktop Component 1: (no name) - file:///C:/Documents%20and%20Settings/AUDIT%20RIDHA/Bureau/Access sélection, opérateurs, fonctions, requête paramétrée_fichiers/cercle1.gif
O24 - Desktop Component 2: (no name) - file:///C:/Documents%20and%20Settings/AUDIT%20RIDHA/Bureau/*