Virus win32

Bonjour,
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 09:20:22, on 14/10/2008
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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Network Associates\VirusScan\Mcshield.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\WINDOWS\system32\wuauc1t.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\wscntfy.exe
C:\WINDOWS\system32\dllChache\Empty.jpg
C:\Program Files\Network Associates\VirusScan\SHSTAT.EXE
C:\WINDOWS\system32\dllChache\Blank.doc
C:\Program Files\Yahoo!\Search Protection\SearchProtection.exe
C:\Program Files\SweetIM\Messenger\SweetIM.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\system32\dllChache\Zero.txt
C:\WINDOWS\system32\dllChache\Hole.zip
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\WINDOWS\system32\dllChache\Unoccupied.reg
C:\PROGRA~1\Yahoo!\MESSEN~1\ymsgr_tray.exe
C:\WINDOWS\system32\wuauc1t.exe
C:\Program Files\Giganology\Gigaget\Gigaget.exe
C:\WINDOWS\system32\wuauc1t.exe
C:\WINDOWS\system32\wuauc1t.exe
C:\WINDOWS\system32\wuauc1t.exe
C:\WINDOWS\system32\wuauc1t.exe
C:\WINDOWS\system32\wuauc1t.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\MSN Messenger\usnsvc.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://us.rd.yahoo.com/customize/ycomp/defaults/sb/*http://www.yahoo.com/search/ie.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://us.rd.yahoo.com/customize/ycomp/defaults/sp/*https://fr.yahoo.com/?p=us
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://mail.yahoo.com/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = https://home.sweetim.com/
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://us.rd.yahoo.com/customize/ycomp/defaults/su/*https://fr.yahoo.com/?p=us
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
R3 - URLSearchHook: SweetIM ToolbarURLSearchHook Class - {EEE6C35D-6118-11DC-9C72-001320C79847} - C:\Program Files\SweetIM\Toolbars\Internet Explorer\mgHelper.dll
F2 - REG:system.ini: UserInit=C:\WINDOWS\system32\userinit.exe, "C:\WINDOWS\system32\M5VBVM60.EXE StartUp"
O2 - BHO: &Yahoo! Toolbar Helper - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: GigagetIEHelper - {111CAA23-6F4F-42AC-8555-B48C1D87BBAB} - C:\WINDOWS\System32\gigagetbho_v10.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: SWEETIE - {EEE6C35C-6118-11DC-9C72-001320C79847} - C:\Program Files\SweetIM\Toolbars\Internet Explorer\mgToolbarIE.dll
O2 - BHO: SingleInstance Class - {FDAD4DA1-61A2-4FD8-9C17-86F7AC245081} - C:\Program Files\Yahoo!\Companion\Installs\cpn\YTSingleInstance.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: SweetIM Toolbar for Internet Explorer - {EEE6C35B-6118-11DC-9C72-001320C79847} - C:\Program Files\SweetIM\Toolbars\Internet Explorer\mgToolbarIE.dll
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\System32\igfxtray.exe
O4 - HKLM\..\Run: [ShStatEXE] "C:\Program Files\Network Associates\VirusScan\SHSTAT.EXE" /STANDALONE
O4 - HKLM\..\Run: [McAfeeUpdaterUI] "C:\Program Files\Network Associates\Common Framework\UpdaterUI.exe" /StartedFromRunKey
O4 - HKLM\..\Run: [Network Associates Error Reporting Service] "C:\Program Files\Fichiers communs\Network Associates\TalkBack\TBMon.exe"
O4 - HKLM\..\Run: [REG_WININI] C:\WINDOWS\winini.exe
O4 - HKLM\..\Run: [Gigaget] "C:\Program Files\Giganology\Gigaget\GigagetShell.exe" /s
O4 - HKLM\..\Run: [YSearchProtection] "C:\Program Files\Yahoo!\Search Protection\SearchProtection.exe"
O4 - HKLM\..\Run: [Blank AntiViri] C:\AUT0EXEC.BAT StartUp
O4 - HKLM\..\Run: [SweetIM] C:\Program Files\SweetIM\Messenger\SweetIM.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MsnMsgr] ~"C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [Yahoo! Pager] ~"C:\PROGRA~1\Yahoo!\MESSEN~1\YAHOOM~1.EXE" -quiet
O4 - HKCU\..\Run: [Search Protection] C:\Program Files\Yahoo!\Search Protection\SearchProtection.exe
O4 - HKCU\..\Run: [YSearchProtection] C:\Program Files\Yahoo!\Search Protection\SearchProtection.exe
O4 - HKCU\..\Run: [kamsoft] C:\WINDOWS\system32\ckvo.exe
O4 - HKCU\..\Run: [Secure64] C:\WINDOWS\system32\dllcache\Regedit32.com StartUp
O4 - HKCU\..\Run: [Secure32] C:\WINDOWS\system32\dllcache\Shell32.com StartUp
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')
O8 - Extra context menu item: &Download All by Gigaget - C:\Program Files\Giganology\Gigaget\getallurl.htm
O8 - Extra context menu item: &Download by Gigaget - C:\Program Files\Giganology\Gigaget\geturl.htm
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
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
O17 - HKLM\System\CCS\Services\Tcpip\..\{24DB8572-CB42-47FF-9336-2223BCA41AF1}: NameServer = 41.207.177.17,41.207.160.45
O17 - HKLM\System\CS1\Services\Tcpip\..\{24DB8572-CB42-47FF-9336-2223BCA41AF1}: NameServer = 41.207.177.17,41.207.160.45
O23 - Service: Service Framework McAfee (McAfeeFramework) - Network Associates, Inc. - C:\Program Files\Network Associates\Common Framework\FrameworkService.exe
O23 - Service: Network Associates McShield (McShield) - Network Associates, Inc. - C:\Program Files\Network Associates\VirusScan\Mcshield.exe
O23 - Service: Network Associates Task Manager (McTaskManager) - Network Associates, Inc. - C:\Program Files\Network Associates\VirusScan\VsTskMgr.exe