Downloader.Trojan in XP

I believe I may have a trojan lingering in my system. NAV 2005 told me I had a Downloader.Trojan virus (filename 0g1sa.dll). So I used the trojan removal instructions I found on another forum and the anti trojan program Trojan Hunter found the virus (0g1sa) and deleted it. Then I ran TDS-3 and it found a bunch of Hidden ADS streams, so I deleted those and some of the host files. So after everything was done, I restarted my computer in normal mode and everything seemed to run a little better (the HDD light wasn't on all the time). Then after a short time, it started again, so I tried to find the program in Task manager and came up with two processes I hadn't heard of before, crtv32.exe and msjz.exe. I was able to stop the process crtv32 process, but the msjz process kept reappearing as soon as I stopped it. Eventually so did the crtv32 process. I then happened to come across this log called f2install.log in my root directory:
>>Install Start...
Include to Autorun
>>TestModule(496949607)
Event:0x000300F6:36:0:11659880
Event:0x000300F6:129:0:11659852
Event:0x000300F6:131:0:11659912
Event:0x000300F6:1:0:11659816
>>SaveModule(0)
Old Path: C:\WINDOWS\apppn.dll
New Path: C:\WINDOWS\COM+.log:eddroi
<<SaveModule
>>TestModule(496949607)
Before Service Found:1785121754
Service File Mapping Found
Service Found
>>SaveModule(1)
Old Path: C:\WINDOWS\system32\msjz.exe
New Path: C:\WINDOWS\cthlr.txt:wwwxil
<<SaveModule
<<Install

Does that mean anything to me? And does anybody have suggestions on how I get rid of this thing?

 

crtv32.exe is apparently detected by About Buster-nr 15 on the list, so you could download and update/run it. An online scan or two wouldn't hurt (links in my signature).

When this is done, then i would download HiJackThis and post your log at CastleCops and let them have a look it, because you definitely have a problem.

Hope this helps.