Trojaner-Board - Offen bekomme Antivir nicht installiert

Habe da ein Problem mein Antivir hat faxen gemacht da wollte ich es wieder neu installieren jetzt bekomme ich diese Meldung
Die CRC-Summe von C:\..................\setup.exe wurde verändert! Dies könnte von einem Virus verursacht worden sein kann mir jemand helfen ?

Hänge mal meinen HijackThis Logfile dran
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 01:27:05, on 13.06.2009
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\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:\WINDOWS\system32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Programme\Internet Explorer\IEXPLORE.EXE
C:\Programme\Internet Explorer\iexplore.exe
C:\Programme\Internet Explorer\iexplore.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Programme\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.de/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Programme\Gemeinsame Dateien\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Skype add-on (mastermind) - {22BF413B-C6D2-4d91-82A9-A0F997BA588C} - C:\Programme\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Programme\Java\jre6\bin\ssv.dll
O2 - BHO: Windows Live Anmelde-Hilfsprogramm - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Programme\Gemeinsame Dateien\Microsoft Shared\Windows Live\WindowsLiveLogin.dll (file missing)
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Programme\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Programme\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User '?')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User '?')
O4 - HKUS\S-1-5-21-583907252-73586283-725345543-1004\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe (User '?')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User '?')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O8 - Extra context menu item: Nach Microsoft &Excel exportieren - res://C:\PROGRA~1\MI1933~1\Office10\EXCEL.EXE/3000
O9 - Extra button: In Blog veröffentlichen - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Programme\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: In Windows Live Writer in Blog veröffentliche&n - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Programme\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: PokerStars - {3AD14F0C-ED16-4e43-B6D8-661B03F6A1EF} - C:\Programme\PokerStars\PokerStarsUpdate.exe
O9 - Extra button: Skype - {77BF5300-1474-4EC7-9980-D32B190E9B07} - C:\Programme\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.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: ICQ6 - {E59EB121-F339-4851-A3BA-FE49C35617C2} - C:\Programme\ICQ6.5\ICQ.exe
O9 - Extra 'Tools' menuitem: ICQ6 - {E59EB121-F339-4851-A3BA-FE49C35617C2} - C:\Programme\ICQ6.5\ICQ.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programme\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programme\Messenger\msmsgs.exe
O16 - DPF: {1E54D648-B804-468d-BC78-4AFFED8E262E} (System Requirements Lab) - http://www.nvidia.com/content/DriverDownload/srl/3.0.0.0/srl_bin/sysreqlab3.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://gfx2.hotmail.com/mail/w3/resources/MSNPUpld.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1235143826483
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1235143820045
O16 - DPF: {D0C0F75C-683A-4390-A791-1ACFD5599AB8} (Oberon Flash Game Host) - http://icq.oberon-media.com/Gameshell/GameHost/1.0/OberonGameHost.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{296E06FA-5466-4623-AFC0-54E521F68362}: NameServer = 62.220.18.8 89.246.64.8

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