Sounds like Smithfraud. Here is my canned answer and fix for that issue.
Windows XP/2K (includes Ewido)
You may want to print out or make a copy of these instructions before
starting, because you will not be able to connect to the internet during
most of this fix.
Please download smithrem.zip and save it to your desktop
http://www.pcbutts1.com/downloads/smithrem.zip
Right click on the file and extract it to its own folder on the desktop.
Please download, install, and update the free version of Ewido Security
Suite:
When installing, under "Additional Options" uncheck "Install background
guard" and "Install scan via context menu"
http://www.pcbutts1.com/downloads/ewidosetup.exe .
From the main Ewido screen, click on update in the left menu, then click the
Start update button.
After the update finishes, the status bar at the bottom will display "Update
successful"
Exit Ewido. DO NOT run a scan yet.
If you do not already have Ad-Aware SE 1.06 installed, download
http://www.pcbutts1.com/downloads/aawsepersonal.exe
Again, do NOT run a scan yet.
Next, please reboot your computer in Safe Mode by doing the following:
Restart your computer
After hearing your computer beep once during startup, but before the Windows
icon appears, press F8.
Instead of Windows loading as normal, a menu should appear
Select the first option, to run Windows in Safe Mode.
Now scan with HJT
http://www.pcbutts1.com/downloads/HijackThis.zip and place
a checkmark next to each of the following items:
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL =
http:://
www.quicknavigate.com/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar =
http:://
www.quicknavigate.com/bar.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page =
http:://
www.quicknavigate.com/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
http:://
www.quicknavigate.com/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
http:://
www.quicknavigate.com/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) =
http:://
www.quicknavigate.com/search.php?qq=%1
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page
=http:://
www.quicknavigate.com/
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL =
about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL =
http:://
www.startsearches.net/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar =
http:://
www.startsearches.net/bar.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page =
http:://
www.startsearches.net/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
http:://
www.startsearches.net/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
http:://
www.startsearches.net/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) =
http:://
www.startsearches.net/search.php?qq=%1
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
http:://
www.startsearches.net/
O2 - BHO: VMHomepage Class - {FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF} -
C:\WINDOWS\System32\hp6DD8.tmp
O4 - HKCU\..\Run: [WindowsFY] c:\wp.exe
O4 - HKCU\..\Run: [WindowsFY] c:\bsw.exe
O4 - HKLM\..\Run: [WindowsFZ] C:\WINDOWS\ZLOADER3.EXE
O4 - HKLM\..\Run: [Security iGuard] C:\Program Files\Security
iGuard\Security iGuard.exe
O4 - HKLM\..\Run: [PSGuard] C:\Program Files\PSGuard\PSGuard.exe
O9 - Extra button: Microsoft AntiSpyware helper -
{D5BC2651-6A61-4542-BF7D-84D42228772C} - C:\WINDOWS\System32\wldr.dll
O9 - Extra 'Tools' menuitem: Microsoft AntiSpyware helper -
{D5BC2651-6A61-4542-BF7D-84D42228772C} - C:\WINDOWS\System32\wldr.dll
O9 - Extra button: Microsoft AntiSpyware helper -
{D5BC2651-6A61-4542-BF7D-84D42228772C} - C:\WINDOWS\System32\wldr.dll (HKCU)
O9 - Extra 'Tools' menuitem: Microsoft AntiSpyware helper -
{D5BC2651-6A61-4542-BF7D-84D42228772C} - C:\WINDOWS\System32\wldr.dll (HKCU)
Delete any other malware files not associated with the smitfraud variants
and SpySheriff.
Open the smithrem folder, then double click the RunThis.bat file to start
the tool. Follow the prompts on screen. Your desktop and icons will
disappear and then reappear again --- this is normal.
Wait for the tool to complete and Disk Cleanup to finish --- this may take a
while; please be patient.
Next, run Ad-aware and perform a full scan. Remove everything found.
Now open Ewido Security Suite
Click on Scanner
Click on Complete System Scan and the scan will begin.
NOTE: During some scans with ewido it is finding cases of false positives.
You will need to step through the process of cleaning files one-by-one. If
ewido detects a file you KNOW to be legitimate, select none as the action.
DO NOT select "Perform action on all infections"
When the scan is finished, click the Save report button at the bottom of the
screen.
Save the report to your desktop
Close Ewido
Next go to Start -> Control Panel, click Display -> Desktop -> Customize
Desktop -> Web -> Uncheck "Security Info" if present.
Restart your computer in normal mode.
Run Panda's online virus scan and perform a full system scan
http://www.pandasoftware.com/products/activescan/com/activescan_principal.htm .
Make sure the Autoclean box is checked!
Finally, restart your computer once more, and please post a new HijackThis
log as well as the log from the Ewido scan and the log from the smitRem
tool, which will be located at C:\smitfiles.txt.
Let me know if any problems persist.
Please Note: You may not find every file listed as you state you have
already removed some of the smithfraud files.
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