[sam22]

please help me as my puter is running slower than normal. the main problem is that i can connect to the internet and surf the web for a while, but then all of a sudden internet explorer cannot open up any more pages. however, msn messenger keeps on running fine. my avg antivirus detected the trojan IRC/BackDoor.SDBot.54.X in the file windows/system32/regscan.exe, but cant remove it...how do i do that?

i have also included a hijackthis report:

Logfile of HijackThis v1.97.7
Scan saved at 16:12:42, on 12/09/2004
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
F:\WINDOWS\System32\smss.exe
F:\WINDOWS\system32\winlogon.exe
F:\WINDOWS\system32\services.exe
F:\WINDOWS\system32\lsass.exe
F:\WINDOWS\system32\svchost.exe
F:\WINDOWS\System32\svchost.exe
F:\WINDOWS\system32\spoolsv.exe
F:\PROGRA~1\Grisoft\AVG6\avgserv.exe
F:\Program Files\Common Files\Microsoft Shared\VS7Debug\mdm.exe
F:\WINDOWS\System32\nvsvc32.exe
F:\WINDOWS\Explorer.EXE
F:\WINDOWS\System32\TrayIcon.exe
F:\WINDOWS\sm56hlpr.exe
F:\Program Files\Internet Explorer\iexplore.exe
F:\WINDOWS\System32\spool\drivers\w32x86\3\hpztsb04.exe
F:\WINDOWS\System32\hphmon03.exe
F:\Program Files\Grisoft\AVG6\avgcc32.exe
F:\Program Files\Winamp\winampa.exe
F:\WINDOWS\System32\qttask.exe
F:\WINDOWS\system32\ctfmon.exe
F:\Program Files\MSN Messenger\MsnMsgr.Exe
F:\Program Files\FinePixViewer\QuickDCF.exe
F:\WINDOWS\system32\taskmgr.exe
F:\Documents and Settings\CRS User\Local Settings\Temporary Internet Files\Content.IE5\A9MHUDCB\HijackThis[1].exe
F:\WINDOWS\notepad.exe
F:\Program Files\Internet Explorer\iexplore.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.google.com/ie
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.google.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.blueyonder.co.uk/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.microsoft...B_PVER}&ar=home
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.microsoft...=ie&ar=iesearch
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.microsoft...er=6&ar=msnhome
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://www.microsoft...=ie&ar=iesearch
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.google.com/ie
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://www.google.com/keyword/%s
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = 127.0.0.1
O2 - BHO: (no name) - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - F:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {AA58ED58-01DD-4d91-8333-CF10577473F7} - f:\program files\google\googletoolbar1.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - f:\program files\google\googletoolbar1.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE NvQTwk,NvCplDaemon initialize
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [DisplayTrayIcon] F:\WINDOWS\System32\TrayIcon.exe
O4 - HKLM\..\Run: [SMSERIAL] sm56hlpr.exe
O4 - HKLM\..\Run: [Print Spooler] spools.exe
O4 - HKLM\..\Run: [$WindowsRegKey%update] IEXPLORE.EXE
O4 - HKLM\..\Run: [HPDJ Taskbar Utility] F:\WINDOWS\System32\spool\drivers\w32x86\3\hpztsb04.exe
O4 - HKLM\..\Run: [HPHmon03] F:\WINDOWS\System32\hphmon03.exe
O4 - HKLM\..\Run: [AVG_CC] F:\Program Files\Grisoft\AVG6\avgcc32.exe /startup
O4 - HKLM\..\Run: [Windows Registry Scan] regscan.exe
O4 - HKLM\..\Run: [WinampAgent] F:\Program Files\Winamp\winampa.exe
O4 - HKLM\..\Run: [REGSHAVE] F:\Program Files\REGSHAVE\REGSHAVE.EXE /AUTORUN
O4 - HKLM\..\Run: [QuickTime Task] F:\WINDOWS\System32\qttask.exe
O4 - HKLM\..\RunServices: [Print Spooler] spools.exe
O4 - HKLM\..\RunServices: [$WindowsRegKey%update] IEXPLORE.EXE
O4 - HKLM\..\RunServices: [Windows Registry Scan] regscan.exe
O4 - HKCU\..\Run: [CTFMON.EXE] F:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [$WindowsRegKey%update] IEXPLORE.EXE
O4 - HKCU\..\Run: [Print Spooler] spools.exe
O4 - HKCU\..\Run: [MsnMsgr] "F:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - Global Startup: Exif Launcher.lnk = ?
O4 - Global Startup: Microsoft Office.lnk = F:\Program Files\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: &Google Search - res://F:\Program Files\Google\GoogleToolbar1.dll/cmsearch.html
O8 - Extra context menu item: Backward Links - res://F:\Program Files\Google\GoogleToolbar1.dll/cmbacklinks.html
O8 - Extra context menu item: Cached Snapshot of Page - res://F:\Program Files\Google\GoogleToolbar1.dll/cmcache.html
O8 - Extra context menu item: E&xport to Microsoft Excel - res://F:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O8 - Extra context menu item: Similar Pages - res://F:\Program Files\Google\GoogleToolbar1.dll/cmsimilar.html
O8 - Extra context menu item: Translate into English - res://F:\Program Files\Google\GoogleToolbar1.dll/cmtrans.html
O9 - Extra button: Messenger (HKLM)
O9 - Extra 'Tools' menuitem: Windows Messenger (HKLM)
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macr...ash/swflash.cab

Help would be most appreciated!
Thanks

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[admin]

Please run a free online virus scan here (tick the "Auto Clean checkbox):
http://housecall.antivirus.com/

And a free trojan scan here:
http://www.moosoft.com/