Virus Cheval de troie, analyse de HIJACKTHIS

Bonjour à tous,
L'ordinateur d'un ami se trouve 2000 dossiers infectés. Le pare feu ne marche plus. Si il y quelqu'un qui pourra l'aider? Merci bcp à votre aide à l'avance!
Voici l'analyse de HIJACKTHIS:

Logfile of HijackThis v1.99.1
Scan saved at 10:44:08, on 05/09/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16473)

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:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\wdfmgr.exe
C:\program files\internet explorer\IEXPLORE.EXE
C:\WINDOWS\system32\wbem\wmiprvse.exe
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\system32\igfxpers.exe
C:\Program Files\ClamWin\bin\ClamTray.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe
C:\WINDOWS\System32\alg.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\system32\wscntfy.exe
C:\Program Files\ClamWin\bin\ClamWin.exe
C:\Documents and Settings\Internet\Bureau\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.dell.com/content/public/choosecountry.aspx?c=us&l=en&s=gen
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = https://www.bing.com/?cc=fr&toHttps=1&redig=55729C844D6A45819CAD368B3E178C9F
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.msn.com/fr-fr/?ocid=iehp
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.new114.com.cn
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.4318.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = http://www.4318.com
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = https://home.mcafee.com/StaticGenericPage.aspx?page=cookienotsupported&url=%2fSecure%2fProtected%2fLogin.aspx%3fErrCode%3dPLEASE_LOGIN%26culture%3dfr-FR%26ctst%3d1
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: (no name) - {08C06D61-F1F3-4799-86F8-BE1A89362C85} - (no file)
O1 - Hosts: 125.91.1.20 www.37021.net
O1 - Hosts: 125.91.1.20 37021.net
O1 - Hosts: 125.91.1.20 5235.net
O1 - Hosts: 125.91.1.20 www.5235.net
O1 - Hosts: 125.91.1.20 www.7255.com
O1 - Hosts: 125.91.1.20 www.2345.com
O1 - Hosts: 125.91.1.20 www.9991.com
O1 - Hosts: 125.91.1.20 www.haol23.net
O1 - Hosts: 125.91.1.20 www.kzdh.com
O1 - Hosts: 125.91.1.20 www.qu123.com
O1 - Hosts: 125.91.1.20 www.8749.com
O1 - Hosts: 125.91.1.20 8749.com
O1 - Hosts: 125.91.1.20 www.4199.com
O1 - Hosts: 125.91.1.20 4199.com
O1 - Hosts: 125.91.1.20 www.3448.com
O1 - Hosts: 125.91.1.20 3448.com
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: Navcot Class - {116AE73A-7D10-4EC2-A46D-52CA50D5197F} - C:\WINDOWS\system32\navcoy.dll
O2 - BHO: DriveLetterAccess - {5CA3D70E-1895-11CF-8E15-001234567890} - C:\WINDOWS\system32\dla\tfswshx.dll
O4 - HKLM\..\Run: [igfxtray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [igfxhkcmd] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [igfxpers] C:\WINDOWS\system32\igfxpers.exe
O4 - HKLM\..\Run: [Microsoft Autorun5] C:\WINDOWS\system32\mosou.exe
O4 - HKLM\..\Run: [AVPSrv] C:\WINDOWS\AVPSrv.exe
O4 - HKLM\..\Run: [WinForm] C:\WINDOWS\WinForm.exe
O4 - HKLM\..\Run: [Microsoft Autorun11] C:\WINDOWS\system32\nwizwlwzs.exe
O4 - HKLM\..\Run: [cmdbcs] C:\WINDOWS\cmdbcs.exe
O4 - HKLM\..\Run: [mppds] C:\WINDOWS\mppds.exe
O4 - HKLM\..\Run: [Microsoft Autorun10] C:\WINDOWS\system32\nwizwmgjs.exe
O4 - HKLM\..\Run: [Kvsc3] C:\WINDOWS\Kvsc3.exe
O4 - HKLM\..\Run: [ClamWin] "C:\Program Files\ClamWin\bin\ClamTray.exe" --logon
O4 - HKLM\..\Run: [NVDispDrv] C:\WINDOWS\NVDispDrv.exe
O4 - HKLM\..\Run: [!AVG Anti-Spyware] "C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe" /minimized
O4 - HKLM\..\Run: [RAVWLMON] C:\Program Files\NetMeeting\ravwlmon.exe
O4 - HKLM\..\Run: [RAVZXMON] C:\Program Files\NetMeeting\ravzxmon.exe
O4 - HKLM\..\Run: [RAVZTMON] C:\Program Files\NetMeeting\ravztmon.exe
O4 - HKLM\..\Run: [DiskMan32] C:\WINDOWS\DiskMan32.exe
O4 - HKLM\..\Run: [MsIMMs32] C:\WINDOWS\MsIMMs32.exe
O4 - HKLM\..\Run: [avpzt] C:\Program Files\NetMeeting\avpzt.exe
O4 - HKLM\..\Run: [DbgHlp32] C:\WINDOWS\DbgHlp32.exe
O4 - HKLM\..\Run: [upxdnd] C:\WINDOWS\upxdnd.exe
O4 - HKLM\..\Run: [msccrt] C:\WINDOWS\msccrt.exe
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\j2re1.4.2_03\bin\npjpi142_03.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\j2re1.4.2_03\bin\npjpi142_03.dll
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - %windir%\bdoscandel.exe (file missing)
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - %windir%\bdoscandel.exe (file missing)
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
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
O10 - Unknown file in Winsock LSP: c:\windows\system32\mscomm.dll
O10 - Unknown file in Winsock LSP: c:\windows\system32\mscomm.dll
O11 - Options group: [INTERNATIONAL] International*
O15 - Trusted Zone: www.chargeur-online.com
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://www.bitdefender.fr/scan_fr/scan8/oscan8.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O16 - DPF: {F4130EE3-524C-45B2-A2DC-185C262809F9} (StachaImpEtq Control) - http://www.chargeur-online.com/ressources-stacha/StachaImpEtqProj1V150.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{B975D33C-C4AE-43FC-BBF7-658FD3DCBAF3}: NameServer = 80.10.246.129,80.10.246.2
O17 - HKLM\System\CCS\Services\Tcpip\..\{EC1F8141-2B40-4122-9C8E-EB1BA42C52FF}: NameServer = 193.252.19.3,193.252.19.4
O20 - AppInit_DLLs: zxdpri.dll
O20 - Winlogon Notify: igfxcui - C:\WINDOWS\SYSTEM32\igfxdev.dll
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\
O21 - SSODL: z0xyvwtu - {9630DA74-741E-30DA-30DA-1EB852FC9630} - (no file)
O23 - Service: 85F5FEB8 - Unknown owner - C:\WINDOWS\system32\B9847062.EXE (file missing)
O23 - Service: AntiVir PersonalEdition Classic Scheduler (AntiVirScheduler) - Unknown owner - C:\Program Files\AntiVir PersonalEdition Classic\sched.exe (file missing)
O23 - Service: AntiVir PersonalEdition Classic Guard (AntiVirService) - Unknown owner - C:\Program Files\AntiVir PersonalEdition Classic\avguard.exe (file missing)
O23 - Service: AVG Anti-Spyware Guard - GRISOFT s.r.o. - C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
O23 - Service: Windows server manager (mgsqueue
) - Unknown owner - C:\WINDOWS\system32\mgsqueue.exe (file missing)
O23 - Service: Windows Message Queue (msgqueue
) - Unknown owner - C:\WINDOWS\system32\msgqueue.exe (file missing)
O23 - Service: Windows_Serveraaa - Unknown owner - C:\WINDOWS\system32\ddos.exe
O23 - Service: Windows_Serverd - Unknown owner - C:\WINDOWS\system32\ddos.exe


Merci encore

xiaokrs