Thanks much for your help!
First, I took another look at my virus scan logs. As it turns out, I've had a mix of both TROJ_SMALL.UP and TROJ_SMALL.SM over the course of the last week or so. In each case, PC-cillin has detected and quarantined the file, and I've subsequently deleated it through PC-cillin.
Now, on to your instructions:
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Find and delete this file or folder, if found
C:\WINDOWS\System32\prvdi.exe <-file
C:\Program Files\WebSiteViewer <-folder
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Neither of these were present. However, prvdi.exe is the name of the file that has been detected and deleated by PC-cillin for TROJ_SMALL.UP. By recollection, the file name associated with TROJ_SMALL.SM was access.exe.
Here is a fresh hijackthis log:
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Logfile of HijackThis v1.98.2
Scan saved at 9:58:26 PM, on 3/30/2005
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
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\Explorer.EXE
C:\Program Files\Trend Micro\PC-cillin 2003\pccguide.exe
C:\Program Files\Trend Micro\PC-cillin 2003\PCCClient.exe
C:\Program Files\Trend Micro\PC-cillin 2003\Pop3trap.exe
C:\Program Files\QuickTime\qttask.exe
C:\PROGRA~1\VERIZO~1\SUPPOR~1\SMARTB~1\MotiveSB.exe
C:\WINDOWS\system32\spool\drivers\w32x86\3\hpztsb07.exe
C:\Program Files\Saitek\Software\Profiler.exe
C:\Program Files\Saitek\Software\SaiSmart.exe
C:\Program Files\Saitek\Software\SaiMfd.exe
C:\Program Files\Messenger\msmsgs.exe
C:\WINDOWS\system32\RUNDLL32.EXE
C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
C:\Program Files\WinZip\WZQKPICK.EXE
C:\Program Files\Microsoft Office\Office\FINDFAST.EXE
C:\Program Files\Verizon Online\SupportCenter\bin\mpbtn.exe
C:\Program Files\Microsoft Office\Office\OSA.EXE
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Trend Micro\PC-cillin 2003\Tmntsrv.exe
C:\WINDOWS\system32\devldr32.exe
C:\Program Files\Trend Micro\PC-cillin 2003\tmproxy.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Program Files\HijackThis\HijackThis.exe
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =
http://start.verizon.net/R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = 127.0.0.1
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O4 - HKLM\..\Run: [pccguide.exe] "C:\Program Files\Trend Micro\PC-cillin 2003\pccguide.exe"
O4 - HKLM\..\Run: [PCCClient.exe] "C:\Program Files\Trend Micro\PC-cillin 2003\PCCClient.exe"
O4 - HKLM\..\Run: [Pop3trap.exe] "C:\Program Files\Trend Micro\PC-cillin 2003\Pop3trap.exe"
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [Motive SmartBridge] C:\PROGRA~1\VERIZO~1\SUPPOR~1\SMARTB~1\MotiveSB.exe
O4 - HKLM\..\Run: [HPDJ Taskbar Utility] C:\WINDOWS\system32\spool\drivers\w32x86\3\hpztsb07.exe
O4 - HKLM\..\Run: [Profiler] C:\Program Files\Saitek\Software\Profiler.exe
O4 - HKLM\..\Run: [SaiSmart] C:\Program Files\Saitek\Software\SaiSmart.exe
O4 - HKLM\..\Run: [SaiMfd] C:\Program Files\Saitek\Software\SaiMfd.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NVMCTRAY.DLL,NvTaskbarInit
O4 - Startup: Microsoft Find Fast.lnk = C:\Program Files\Microsoft Office\Office\FINDFAST.EXE
O4 - Startup: Office Startup.lnk = C:\Program Files\Microsoft Office\Office\OSA.EXE
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Verizon Online Support Center.lnk = C:\Program Files\Verizon Online\SupportCenter\bin\matcli.exe
O4 - Global Startup: WinZip Quick Pick.lnk = C:\Program Files\WinZip\WZQKPICK.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
and here is hslog.txt:
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Horseserver Removal Tool v1.05
by Atri
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1. Registry Fix Started
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Registry fix complete
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2. Deleted Services
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3. Finding files Located on system
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msvcrta.dll
w32tm.exe
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4. Deleting files that were found.
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5. Checking for and Removing Winupdate
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Again, thanks for the help!