Infection de virus DealPly-A, DomaiQ-AP, Installer-U

Bonjour,

J'ai passé l'antivirus Avast avec Scan au démarrage.

Mon ordinateur a été infecté par les virus suivants :
Win32:DealPly-A
Win23:DomaiQ-AP
Win32:Installer-U

J'ai passé HijackThis. Voici le résultat de l'analyse ci dessous. Comment éliminer complètement ces virus, sans utiliser des logiciels dont on ne sait pas d'où ils viennent ?
Merci d'avance pour votre aide.

Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 16:06:06, on 27/11/2013
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
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\ibmpmsvc.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\Alwil Software\Avast5\AvastSvc.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Alwil Software\Avast5\afwServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\rundll32.exe
C:\WINDOWS\system32\TpShocks.exe
C:\Program Files\IBM\Security\certtool.exe
C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe
C:\WINDOWS\system32\igfxtray.exe
C:\WINDOWS\system32\hkcmd.exe
C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\WINDOWS\system32\spool\drivers\w32x86\3\hpztsb07.exe
C:\Program Files\Fichiers communs\Lenovo\Scheduler\scheduler_proxy.exe
C:\Program Files\Fichiers communs\Adobe\ARM\1.0\AdobeARM.exe
C:\Program Files\Fichiers communs\Java\Java Update\jusched.exe
C:\Program Files\Hp\HP Software Update\HPWuSchd2.exe
C:\Program Files\Alwil Software\Avast5\AvastUI.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Messenger\msmsgs.exe
C:\WINDOWS\system32\RunDll32.exe
C:\Program Files\OpenOffice.org 3\program\soffice.exe
C:\Program Files\OpenOffice.org 3\program\soffice.bin
C:\WINDOWS\system32\svchost.exe
C:\Program Files\IBM\Security\uvmserv.exe
C:\Program Files\IBM\Security\TssCore.exe
C:\Program Files\Java\jre7\bin\jqs.exe
C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Fichiers communs\Lenovo\tvt_reg_monitor_svc.exe
C:\WINDOWS\System32\TPHDEXLG.exe
C:\Program Files\Fichiers communs\Lenovo\Scheduler\tvtsched.exe
C:\Program Files\ThinkPad\Utilities\PWMDBSVC.EXE
C:\Program Files\Lenovo\System Update\SUService.exe
C:\WINDOWS\system32\wbem\wmiprvse.exe
C:\WINDOWS\system32\wbem\wmiapsrv.exe
C:\WINDOWS\System32\alg.exe
C:\Program Files\Fichiers communs\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPSVC.EXE
C:\WINDOWS\regedit.exe
C:\WINDOWS\system32\msiexec.exe
C:\Program Files\Trend Micro\HiJackThis\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://start.qone8.com/?type=hp&ts=1383432805&from=tugs&uid=HITACHIXHTS541680J9AT00_SB0251KGEKV9DEEKV9DEX
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.bing.com
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://start.qone8.com/?type=hp&ts=1383432805&from=tugs&uid=HITACHIXHTS541680J9AT00_SB0251KGEKV9DEEKV9DEX
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://start.qone8.com/web/?type=ds&ts=1383432805&from=tugs&uid=HITACHIXHTS541680J9AT00_SB0251KGEKV9DEEKV9DEX&q={searchTerms}
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://start.qone8.com/web/?type=ds&ts=1383432805&from=tugs&uid=HITACHIXHTS541680J9AT00_SB0251KGEKV9DEEKV9DEX&q={searchTerms}
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://start.qone8.com/?type=hp&ts=1383432805&from=tugs&uid=HITACHIXHTS541680J9AT00_SB0251KGEKV9DEEKV9DEX
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,Default_Search_URL = http://feed.snapdo.com/?publisher=Tuguu&dpid=TuguuCR&co=FR&userid=94519cdf-149c-19a7-7ff8-385c9d3520dd&searchtype=ds&q={searchTerms}&installDate=29/10/2013
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://feed.snapdo.com/?publisher=Tuguu&dpid=TuguuCR&co=FR&userid=94519cdf-149c-19a7-7ff8-385c9d3520dd&searchtype=ds&q={searchTerms}&installDate=29/10/2013
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://start.qone8.com/web/?type=ds&ts=1383432805&from=tugs&uid=HITACHIXHTS541680J9AT00_SB0251KGEKV9DEEKV9DEX&q={searchTerms}
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = http://start.qone8.com/web/?type=ds&ts=1383432805&from=tugs&uid=HITACHIXHTS541680J9AT00_SB0251KGEKV9DEEKV9DEX&q={searchTerms}
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre7\bin\ssv.dll
O2 - BHO: avast! Online Security - {8E5E2654-AD2D-48bf-AC2D-D17F00898D06} - C:\Program Files\Alwil Software\Avast5\aswWebRepIE.dll
O2 - BHO: URLRedirectionBHO - {B4F3A835-0E21-4959-BA22-42B3008E02FF} - C:\PROGRA~1\MICROS~2\Office14\URLREDIR.DLL
O2 - BHO: Ask Toolbar BHO - {D4027C7F-154A-4066-A1AD-4243D8127440} - (no file)
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre7\bin\jp2ssv.dll
O3 - Toolbar: (no name) - {D4027C7F-154A-4066-A1AD-4243D8127440} - (no file)
O3 - Toolbar: avast! Online Security - {8E5E2654-AD2D-48bf-AC2D-D17F00898D06} - C:\Program Files\Alwil Software\Avast5\aswWebRepIE.dll
O3 - Toolbar: (no name) - {ae07101b-46d4-4a98-af68-0333ea26e113} - (no file)
O4 - HKLM\..\Run: [PWRMGRTR] rundll32 C:\PROGRA~1\ThinkPad\UTILIT~1\PWRMGRTR.DLL,PwrMgrBkGndMonitor
O4 - HKLM\..\Run: [BLOG] rundll32 C:\PROGRA~1\ThinkPad\UTILIT~1\BatLogEx.DLL,StartBattLog
O4 - HKLM\..\Run: [TpShocks] TpShocks.exe
O4 - HKLM\..\Run: [ISS_Certtool] C:\Program Files\IBM\Security\certtool.exe
O4 - HKLM\..\Run: [IBM_PWMGR] C:\Program Files\IBM\Password Manager\pwmgr.exe
O4 - HKLM\..\Run: [PSQLLauncher] "C:\Program Files\ThinkVantage Fingerprint Software\launcher.exe" /startup
O4 - HKLM\..\Run: [RemoteControl] "C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe"
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [SynTPLpr] C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [EPSON Stylus DX4800 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATIADE.EXE /P26 "EPSON Stylus DX4800 Series" /O6 "USB001" /M "Stylus DX4800"
O4 - HKLM\..\Run: [HPDJ Taskbar Utility] C:\WINDOWS\system32\spool\drivers\w32x86\3\hpztsb07.exe
O4 - HKLM\..\Run: [TVT Scheduler Proxy] C:\Program Files\Fichiers communs\Lenovo\Scheduler\scheduler_proxy.exe
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [Adobe ARM] "C:\Program Files\Fichiers communs\Adobe\ARM\1.0\AdobeARM.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Fichiers communs\Java\Java Update\jusched.exe"
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\Hp\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [AvastUI.exe] "C:\Program Files\Alwil Software\Avast5\AvastUI.exe" /nogui
O4 - HKLM\..\Run: [20131121] C:\Program Files\Alwil Software\Avast5\setup\emupdate\e89818fc-4bf9-44ba-a3c3-964f138e43d0.exe /check
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\RunOnce: [FlashPlayerUpdate] C:\WINDOWS\system32\Macromed\Flash\FlashUtil32_11_9_900_117_Plugin.exe -update plugin
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 - Startup: Alertes de surveillance de l'encre - HP Officejet Pro 8600.lnk = ?
O4 - Startup: OpenOffice.org 3.0.lnk = C:\Program Files\OpenOffice.org 3\program\quickstart.exe
O8 - Extra context menu item: &Envoyer à OneNote - res://C:\PROGRA~1\MICROS~2\Office14\ONBttnIE.dll/105
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office14\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre7\bin\jp2iexp.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre7\bin\jp2iexp.dll
O9 - Extra button: Envoyer à OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\Program Files\Microsoft Office\Office14\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: &Envoyer à OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\Program Files\Microsoft Office\Office14\ONBttnIE.dll
O9 - Extra button: Notes &liées OneNote - {789FE86F-6FC4-46A1-9849-EDE0DB0C95CA} - C:\Program Files\Microsoft Office\Office14\ONBttnIELinkedNotes.dll
O9 - Extra 'Tools' menuitem: Notes &liées OneNote - {789FE86F-6FC4-46A1-9849-EDE0DB0C95CA} - C:\Program Files\Microsoft Office\Office14\ONBttnIELinkedNotes.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
O18 - Filter hijack: text/xml - {807573E5-5146-11D5-A672-00B0D022E945} - C:\Program Files\Fichiers communs\Microsoft Shared\OFFICE14\MSOXMLMF.DLL
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 Flash Player Update Service (AdobeFlashPlayerUpdateSvc) - Adobe Systems Incorporated - C:\WINDOWS\system32\Macromed\Flash\FlashPlayerUpdateService.exe
O23 - Service: avast! Antivirus - AVAST Software - C:\Program Files\Alwil Software\Avast5\AvastSvc.exe
O23 - Service: avast! Firewall - AVAST Software - C:\Program Files\Alwil Software\Avast5\afwServ.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: Service Google Update (gupdate) (gupdate) - Unknown owner - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Service Google Update (gupdatem) (gupdatem) - Unknown owner - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: IBM User Verification Manager - Unknown owner - C:\Program Files\IBM\Security\uvmserv.exe
O23 - Service: ThinkPad PM Service (IBMPMSVC) - Lenovo - C:\WINDOWS\system32\ibmpmsvc.exe
O23 - Service: Service COM de gravage de CD IMAPI (ImapiService) - Unknown owner - C:\WINDOWS\system32\imapi.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Oracle Corporation - C:\Program Files\Java\jre7\bin\jqs.exe
O23 - Service: Partage de Bureau à distance NetMeeting (mnmsrvc) - Unknown owner - C:\WINDOWS\system32\mnmsrvc.exe
O23 - Service: Mozilla Maintenance Service (MozillaMaintenance) - Mozilla Foundation - C:\Program Files\Mozilla Maintenance Service\maintenanceservice.exe
O23 - Service: Plug-and-Play (PlugPlay) - Unknown owner - C:\WINDOWS\system32\services.exe
O23 - Service: Power Manager DBC Service - Unknown owner - C:\Program Files\ThinkPad\Utilities\PWMDBSVC.EXE
O23 - Service: Gestionnaire de session d'aide sur le Bureau à distance (RDSessMgr) - Unknown owner - C:\WINDOWS\system32\sessmgr.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: System Update (SUService) - Lenovo Group Limited - C:\Program Files\Lenovo\System Update\SUService.exe
O23 - Service: Journaux et alertes de performance (SysmonLog) - Unknown owner - C:\WINDOWS\system32\smlogsvc.exe
O23 - Service: ThinkVantage Registry Monitor Service - Lenovo Group Limited - C:\Program Files\Fichiers communs\Lenovo\tvt_reg_monitor_svc.exe
O23 - Service: ThinkPad HDD APS Logging Service (TPHDEXLGSVC) - Lenovo. - C:\WINDOWS\System32\TPHDEXLG.exe
O23 - Service: TVT Scheduler - Lenovo Group Limited - C:\Program Files\Fichiers communs\Lenovo\Scheduler\tvtsched.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