[virus trojan] conseil d'expert !!!

Salut à vous,
Je suis un novice en informatique et je viens d'être infesté par des virus. Ils ont été détecté par Bitdefender, et mis en quarantaine. Aprés la période d'essaiede cet antivirus, j'ai réinstallé une version de Kaspersky qui m'a réguliérement indiqué la présence de ces même virus et de son imposibilité de faire qlq choses.
Les virus sont Trojan-Downloader.Win32.Zlob.bma et Trojan.Win32.Inject.ba
Pour gagner du temps et en me renseignant sur ce site, je viens de suivre les étapes préalable à toutes désinféction :

1 nettoyage avec Ccleaner.

2 Scann avec AVG anti spyware, dont voilà le rapport :
---------------------------------------------------------
AVG Anti-Spyware - Rapport d'analyse
---------------------------------------------------------

+ Créé à: 18:26:22 14/02/2007

+ Résultat de l'analyse:

C:\Documents and Settings\Benoit\Bureau\winrar_winrar_3.62_francais_anglais_9632.exe -> Dropper.Agent.bct : Nettoyé.
:mozilla.8:C:\Documents and Settings\Benoit\Application Data\Mozilla\Firefox\Profiles\okhsnnk7.default\cookies.txt -> TrackingCookie.247realmedia : Nettoyé.
:mozilla.9:C:\Documents and Settings\Benoit\Application Data\Mozilla\Firefox\Profiles\okhsnnk7.default\cookies.txt -> TrackingCookie.247realmedia : Nettoyé.

Fin du rapport

3 Scann avec antivirus en ligne BitDefender :

Time
00:42:3
Files
295006
Folders
3238
Boot Sectors
4
Archives
6588
Packed Files
12106

Results
Identified Viruses
2
Infected Files
4
Suspect Files
0
Warnings
0
Disinfected
0
Deleted Files
4

Engines Info
Virus Definitions
420977
Engine build
AVCORE v1.0 (build 2371) (i386) (Dec 13 2006 11:16:42)
Scan plugins
14
Archive plugins
38
Unpack plugins
6
E-mail plugins
6
System plugins
1

Scan Settings
First Action
Disinfect
Second Action
Delete
Heuristics
Yes
Enable Warnings
Yes
Scanned Extensions
*;
Exclude Extensions

Scan Emails
Yes
Scan Archives
Yes
Scan Packed
Yes
Scan Files
Yes
Scan Boot
Yes

Scanned File
Status
C:\System Volume Information\_restore{55C43280-EB61-47CB-9151-2B2ACEA5AFE1}\RP134\A0010118.exe
Infected with: Trojan.Zlob.JH
C:\System Volume Information\_restore{55C43280-EB61-47CB-9151-2B2ACEA5AFE1}\RP134\A0010118.exe
Disinfection failed
C:\System Volume Information\_restore{55C43280-EB61-47CB-9151-2B2ACEA5AFE1}\RP134\A0010118.exe
Deleted
C:\System Volume Information\_restore{55C43280-EB61-47CB-9151-2B2ACEA5AFE1}\RP134\A0010119.exe
Infected with: Trojan.Zlob.JH
C:\System Volume Information\_restore{55C43280-EB61-47CB-9151-2B2ACEA5AFE1}\RP134\A0010119.exe
Disinfection failed
C:\System Volume Information\_restore{55C43280-EB61-47CB-9151-2B2ACEA5AFE1}\RP134\A0010119.exe
Deleted
C:\System Volume Information\_restore{55C43280-EB61-47CB-9151-2B2ACEA5AFE1}\RP134\A0010120.exe
Infected with: Trojan.Zlob.JH
C:\System Volume Information\_restore{55C43280-EB61-47CB-9151-2B2ACEA5AFE1}\RP134\A0010120.exe
Disinfection failed
C:\System Volume Information\_restore{55C43280-EB61-47CB-9151-2B2ACEA5AFE1}\RP134\A0010120.exe
Deleted
C:\System Volume Information\_restore{55C43280-EB61-47CB-9151-2B2ACEA5AFE1}\RP134\A0010121.exe
Infected with: Trojan.Downloader.Zlob.ALT
C:\System Volume Information\_restore{55C43280-EB61-47CB-9151-2B2ACEA5AFE1}\RP134\A0010121.exe
Disinfection failed
C:\System Volume Information\_restore{55C43280-EB61-47CB-9151-2B2ACEA5AFE1}\RP134\A0010121.exe
Deleted

4 Exécution Hijackthis:

Logfile of HijackThis v1.99.1
Scan saved at 19:22:06, on 14/02/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.5730.0011)

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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\SOUNDMAN.EXE
C:\WINDOWS\AGRSMMSG.exe
C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\WINDOWS\TWAIN_32\D66U\D066UUTY.EXE
C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus Personal Pro\avpcc.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktopIndex.exe
C:\Program Files\Google\Google Updater\GoogleUpdater.exe
C:\Program Files\Kaspersky Lab\Kaspersky Anti-Hacker\KAVPF.exe
C:\Program Files\OpenOffice.org 2.1\program\soffice.exe
C:\Program Files\OpenOffice.org 2.1\program\soffice.BIN
C:\Program Files\Google\Google Desktop Search\GoogleDesktopCrawl.exe
C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus Personal Pro\avpcc.exe
C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Hijackthis Version Française\VERSION TRADUITE ORIGINALE.EXE

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://espaceabonnes.club-internet.fr/index.phtml
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 = https://www.msn.com/fr-fr/?ocid=iehp
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://www.update.microsoft.com/windowsupdate/v6/default.aspx
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Yahoo! Toolbar avec bloqueur de fenêtres pop-up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Aide pour le lien d'Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_10\bin\ssv.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar2.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar2.dll
O3 - Toolbar: Yahoo! Toolbar avec bloqueur de fenêtres pop-up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O4 - HKLM\..\Run: [LaunchApp] Alaunch
O4 - HKLM\..\Run: [VTTimer] VTTimer.exe
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.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: [ATIModeChange] Ati2mdxx.exe
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [Workflow] E:\install\Workflow.exe
O4 - HKLM\..\Run: [Google Desktop Search] "C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe" /startup
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [D066UUtility] C:\WINDOWS\TWAIN_32\D66U\D066UUTY.EXE
O4 - HKLM\..\Run: [OfficeGuard RegChecker] "C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus Personal Pro\ogrc.exe"
O4 - HKLM\..\Run: [AVPCC] "C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus Personal Pro\avpcc.exe" /wait
O4 - HKLM\..\Run: [!AVG Anti-Spyware] "C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe" /minimized
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\1.2.1128.5462\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [eMuleAutoStart] C:\eMule\emule.exe -AutoStart
O4 - Startup: OpenOffice.org 2.1.lnk = C:\Program Files\OpenOffice.org 2.1\program\quickstart.exe
O4 - Global Startup: Outil de mise à jour Google.lnk = C:\Program Files\Google\Google Updater\GoogleUpdater.exe
O4 - Global Startup: Kaspersky Anti-Hacker.lnk = ?
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Reader 8.0\Reader\reader_sl.exe
O4 - Global Startup: Adobe Reader Synchronizer.lnk = C:\Program Files\Adobe\Reader 8.0\Reader\AdobeCollabSync.exe
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_10\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_10\bin\ssv.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
O11 - Options group: [INTERNATIONAL] International*
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://download.bitdefender.com/resources/scan8/oscan8.cab
O20 - AppInit_DLLs: C:\PROGRA~1\Google\GOOGLE~3\GOEC62~1.DLL
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: AVG Anti-Spyware Guard - Anti-Malware Development a.s. - C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
O23 - Service: AVP Control Centre Service (AVPCC) - Unknown owner - C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus Personal Pro\avpcc.exe" /service (file missing)
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: KAV Monitor Service (KAVMonitorService) - Unknown owner - C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus Personal Pro\avpm.exe" /service (file missing)

Je n'attends plus que l'avis d'un expert, parce que entre nous je ne vois pas ce que veulent dire ces rapports.
Merci d'avance.