Windows XP Professional SP2 suspected malware

By mbowman
Jul 22, 2009
  1. Hello,

    My machine started acting up about a month ago, and I couldn't tie the behavior to anything specific. I have been using AVG Free 8.0 version for virus protection; I haven't done regular system scans as I should have, but will occasionally do one when the operating system acts funny. My machine has randomly started shutting down, and a few times I have seen a message about a problem with .NET just before it happens. So I used DotNetChecker & Cleaner, and sure enough, my .NET 1.0, 1.1, & 3.0 & up were not checking out correctly. I uninstalled and reinstalled the 1.0 & 1.1, but when I went to reinstall the 3.0 I began running into problems. I did a Google search on the error messages I received, and got an exact match in a thread on your Virus & Malware removal forums. I suspected malware initially (a month ago), but nothing out of the ordinary showed up in my AVG scan, so I dropped it. But I decided to do the 8-step preliminary removal instructions as instructed on your site, and will be posting my information here. Thanks for your help! I will post the results from each step as a separate thread as I go.
  2. mbowman

    mbowman TS Rookie Topic Starter

    Virus scan

    I uninstalled AVG and installed Avast and did a scan. No results reported. Then I uninstalled that and installed Avira and did a scan. This time a file was found: toprates.dll.bac_a00640, a mild Trojan that monitors internet activity. But the odd thing was that the scan found it in a quarantine folder set up by a previous Housecall scan that I did back when I first started having problems. I repaired the problem. I'll continue to follow the steps and see what happens next.
  3. mbowman

    mbowman TS Rookie Topic Starter

    System shutdown symptom

    On another note, I mentioned that what alerted me to the possibility of a problem was that my computer was shutting down randomly. It also seemed to be getting very warm; warmer than I would expect since it is attached to a docking station that allows for air flow under and around the machine. So I tried a can of compressed air applied liberally to the fan vents, and haven't had a sudden shutdown since. Makes me feel kind of silly, but that's one thing that's been going on that doesn't take an exceptionally technical fix.
  4. mbowman

    mbowman TS Rookie Topic Starter

    Post #4

    I have to have 5 posts in order to share the link to the resource I used to deal with my .NET problems. So this is post #4.
  5. mbowman

    mbowman TS Rookie Topic Starter

    Post #5

    And post #5...
  6. mbowman

    mbowman TS Rookie Topic Starter


    Finally...Got my .NET issue resolved by using the .NET cleaner tool to blow them all away and start completely over. If anyone has .NET issues, I recommend the following site: Lots of good information on .NET trouble.
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