Ouverture de dossier avec alerte (virus ?)

Bonjour,

Depuis hier, quand j'ouvre un dossier, j'ai toujours ce message qui apparait "Attention, User ! Some dangerous trojan horses detected in your system. Microsoft Windows files corrupted. This may lead to the destrcution of important files in C:\WINDOWS. Doawnload protection software now!" Je sais qu'il s'agit d'un faux antispyware. J'ai donc fait une analyse avec Nod32 (antivirus) Spybot, Adaware et Spyblaster (antispyware) et A squared (antivers) en vain !
J'ai trouvé sur certains forums des problèmes similaires et des spécialistes demandaient des rapports HijackThis et Smitfraudfix pour vtrouver une solution. Je vous fourni ces 2 rapports, en espérant que quelqu'un pourra m'aider.
Merci d'avance à la communauté

Rapport HijackThis :

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 09:32:26, on 11/07/2008
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16674)
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\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Lavasoft\Ad-Aware\aawservice.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\a-squared Free\a2service.exe
C:\PROGRA~1\FDD_FM~1\CZFMDSER.EXE
C:\Program Files\Fichiers communs\Microsoft Shared\VS7DEBUG\mdm.exe
C:\Program Files\CDBurnerXP\NMSAccessU.exe
C:\Program Files\Eset\nod32krn.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\system32\PSIService.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\wdfmgr.exe
C:\Program Files\UltraVNC\winvnc.exe
C:\WINDOWS\System32\alg.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\wscntfy.exe
C:\Program Files\Eset\nod32kui.exe
C:\Program Files\SuperCopier2\SuperCopier2.exe
C:\Program Files\RocketDock\RocketDock.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Mozilla Sunbird\sunbird.exe
C:\Program Files\Microsoft Office\Office\EXCEL.EXE
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Mozilla Thunderbird\thunderbird.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe
C:\WINDOWS\System32\wbem\wmiprvse.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = www.google.fr...
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = go.microsoft.com...
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = go.microsoft.com...
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = go.microsoft.com...
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = go.microsoft.com...
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = 192.168.20.1:3128
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Yahoo! Toolbar avec bloqueur de fenêtres pop-up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - (no file)
O2 - BHO: VideoCodec Class - {284AAAD9-FDF9-49A3-93ED-9CAE4AA26805} - C:\WINDOWS\system32\AswBHO.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_04\bin\ssv.dll
O2 - BHO: VideoCodec Class - {926A61C9-5C20-4583-ACA7-ACE21088816E} - C:\WINDOWS\system32\RichVideoCodec.dll
O4 - HKLM\..\Run: [nod32kui] "C:\Program Files\Eset\nod32kui.exe" /WAITSERVICE
O4 - HKLM\..\Run: [CZFMDXPK] C:\PROGRA~1\FDD_FM~1\CZFMDXPK.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [WinVNC] "C:\Program Files\UltraVNC\winvnc.exe" -servicehelper
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKCU\..\Run: [SuperCopier2.exe] C:\Program Files\SuperCopier2\SuperCopier2.exe
O4 - HKCU\..\Run: [RocketDock] "C:\Program Files\RocketDock\RocketDock.exe"
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [Rohos] T:\Rohos mini1.exe
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')
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Restrictions present
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Toolbars\Restrictions present
O8 - Extra context menu item: E&xporter vers Microsoft Excel - C:PROGRA~1MICROS~3Office12EXCEL.EXE...
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_04\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_04\bin\ssv.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\Office12\REFIEBAR.DLL
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
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
O16 - DPF: {238F6F83-B8B4-11CF-8771-00A024541EE3} (Citrix ICA Client) - a516.g.akamai.net...
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - update.microsoft.com...
O17 - HKLM\System\CCS\Services\Tcpip\..\{1CAECE55-E644-487F-BFB6-EB8D93758FFD}: NameServer = 192.168.20.254
O17 - HKLM\System\CS1\Services\Tcpip\..\{1CAECE55-E644-487F-BFB6-EB8D93758FFD}: NameServer = 192.168.20.254
O17 - HKLM\System\CS3\Services\Tcpip\..\{1CAECE55-E644-487F-BFB6-EB8D93758FFD}: NameServer = 192.168.20.254
O17 - HKLM\System\CS4\Services\Tcpip\..\{1CAECE55-E644-487F-BFB6-EB8D93758FFD}: NameServer = 192.168.20.254
O23 - Service: a-squared Free Service (a2free) - Emsi Software GmbH - C:\Program Files\a-squared Free\a2service.exe
O23 - Service: Lavasoft Ad-Aware Service (aawservice) - Lavasoft - C:\Program Files\Lavasoft\Ad-Aware\aawservice.exe
O23 - Service: CZFMDSER.EXE - Unknown owner - C:\PROGRA~1\FDD_FM~1\CZFMDSER.EXE
O23 - Service: NMSAccessU - Unknown owner - C:\Program Files\CDBurnerXP\NMSAccessU.exe
O23 - Service: NOD32 Kernel Service (NOD32krn) - Eset - C:\Program Files\Eset\nod32krn.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: ProtexisLicensing - Unknown owner - C:\WINDOWS\system32\PSIService.exe
O23 - Service: ServiceLayer - Nokia. - C:\Program Files\PC Connectivity Solution\ServiceLayer.exe
O23 - Service: VNC Server (winvnc) - www.ultravnc.fr - C:\Program Files\UltraVNC\winvnc.exe