Problème virus

Bonjour,
VOILA LE RAPPORT DE SCAN J4EPERE QUE VOUS POUVEZ M4INDIQUE LA SOURCE DE L'INFECTION
LOG
Logfile of random's system information tool 1.06 (written by random/random)
Run by GS COMPUTER at 2009-12-03 07:29:17
Microsoft Windows XP Professionnel Service Pack 2
System drive C: has 80 GB (85%) free of 95 GB
Total RAM: 3067 MB (70% free)

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 07:30:29, on 03/12/2009
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\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:\WINDOWS\System32\svchost.exe
C:\Program Files\WIDCOMM\Bluetooth Software\bin\btwdins.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\Ati2evxx.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\Program Files\Acer Bio Protection\PdtWzd.exe
C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\MOM.exe
C:\WINDOWS\RTHDCPL.EXE
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Hotspot Shield\bin\openvpnas.exe
C:\Program Files\SuperCopier2\SuperCopier2.exe
C:\Program Files\Hotspot Shield\HssWPR\hsssrv.exe
C:\Program Files\Acer Bio Protection\BASVC.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\DOCUME~1\GSCOMP~1\LOCALS~1\Temp\RtkBtMnt.exe
C:\Program Files\WIDCOMM\Bluetooth Software\BTTray.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\TechSmith\Snagit 9\Snagit32.exe
C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\ccc.exe
C:\Program Files\TechSmith\Snagit 9\TSCHelp.exe
C:\Program Files\TechSmith\Snagit 9\SnagPriv.exe
C:\Program Files\TechSmith\Snagit 9\snagiteditor.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\WINDOWS\system32\wscntfy.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\System32\alg.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Hotspot Shield\bin\openvpntray.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashQuick.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashQuick.exe
C:\WINDOWS\explorer.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashQuick.exe
C:\Program Files\Microsoft Office\OFFICE11\WINWORD.EXE
C:\Program Files\MATLAB\R2008a\bin\win32\matlab.exe
C:\WINDOWS\system32\rundll32.exe
C:\WINDOWS\system32\rundll32.exe
C:\Documents and Settings\GS COMPUTER\Mes documents\Téléchargements\RSIT.exe
C:\WINDOWS\system32\wbem\wmiprvse.exe
C:\Program Files\trend micro\GS COMPUTER.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://search.conduit.com?SearchSource=10&ctid=CT1561552
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Hotspot Shield Toolbar - {c95a4e8e-816d-4655-8c79-d736da1adb6d} - C:\Program Files\Hotspot_Shield\tbHot1.dll
O2 - BHO: SnagIt Toolbar Loader - {00C6482D-C502-44C8-8409-FCE54AD9C208} - C:\Program Files\TechSmith\Snagit 9\SnagitBHO.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
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: Hotspot Shield Toolbar - {c95a4e8e-816d-4655-8c79-d736da1adb6d} - C:\Program Files\Hotspot_Shield\tbHot1.dll
O2 - BHO: Hotspot Shield Class - {F9E4A054-E9B1-4BC3-83A3-76A1AE736170} - C:\Program Files\Hotspot Shield\hssie\HssIE.dll
O3 - Toolbar: Hotspot Shield Toolbar - {c95a4e8e-816d-4655-8c79-d736da1adb6d} - C:\Program Files\Hotspot_Shield\tbHot1.dll
O3 - Toolbar: Snagit - {8FF5E183-ABDE-46EB-B09E-D2AAB95CABE3} - C:\Program Files\TechSmith\Snagit 9\SnagitIEAddin.dll
O4 - HKLM\..\Run: [IMJPMIG8.1] "C:\WINDOWS\IME\imjp8_1\IMJPMIG.EXE" /Spoil /RemAdvDef /Migration32
O4 - HKLM\..\Run: [MSPY2002] C:\WINDOWS\system32\IME\PINTLGNT\ImScInst.exe /SYNC
O4 - HKLM\..\Run: [PHIME2002ASync] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /SYNC
O4 - HKLM\..\Run: [PHIME2002A] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /IMEName
O4 - HKLM\..\Run: [AzMixerSel] C:\Program Files\Realtek\Audio\InstallShield\AzMixerSel.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [StartCCC] "C:\Program Files\ATI Technologies\ATI.ACE\Core-Static\CLIStart.exe" MSRun
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [MailBlocker] C:\DOCUME~1\GSCOMP~1\LOCALS~1\Temp\b.exe
O4 - HKCU\..\Run: [Google Update] "C:\Documents and Settings\GS COMPUTER\Local Settings\Application Data\Google\Update\GoogleUpdate.exe" /c
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: BTTray.lnk = ?
O4 - Global Startup: Snagit 9.lnk = C:\Program Files\TechSmith\Snagit 9\Snagit32.exe
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: Envoyer au périphérique &Bluetooth... - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie_ctx.htm
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
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FICHIE~1\Skype\SKYPE4~1.DLL
O20 - Winlogon Notify: spba - C:\Program Files\Fichiers communs\SPBA\homefus2.dll
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - 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: Bluetooth Service (btwdins) - Broadcom Corporation. - C:\Program Files\WIDCOMM\Bluetooth Software\bin\btwdins.exe
O23 - Service: Hotspot Shield Service (HotspotShieldService) - Unknown owner - C:\Program Files\Hotspot Shield\bin\openvpnas.exe
O23 - Service: Hotspot Shield Routing Service (HssSrv) - AnchorFree Inc. - C:\Program Files\Hotspot Shield\HssWPR\hsssrv.exe
O23 - Service: Hotspot Shield Tray Service (HssTrayService) - Unknown owner - C:\Program Files\Hotspot Shield\bin\HssTrayService.EXE