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Windows 7: Problem with Windows Defender

16 Feb 2011   #1

Windows 7 home premium 32bit
Problem with Windows Defender

Im running windows 7 home premium 32bit. Ok I guess I'll just start from the beginning. I noticed a couple days ago that I had a notification in my toolbar that said Defender had found some problems. I click on it and defender opens just for a second and says I have two trojans then closes quickly. I try to open it over and over and it will open for a split second then close immediately. I restarted multiple times and the same thing kept happening. I ran MalwareBytes and it found 4 trojans which I erased. The problem still was not fixed. I went through steps to delete Defender in hopes of re installing. Everytime I tried to reinstall I got a message stating that Defender is included in Windows Vista and there was no need to install. Well ultimately I downloaded a .msi extractor and took the files out myself. I added them back to C:\Program Files\Windows Defender. Now when I go to run it I get the message "Application failed to initialize: 0x80070006. The handle is invalid." but this also instantly goes away just as fast as it opened. In an attempt to trick whatever virus I have I renamed MSASCui.exe(defender) to random letters and ran again. This time the same message came up but it stayed on the screen until i clicked it off. Part of this virus seems to be a google hijaker. This is very frustrating....any info will help.

p.s. I have run Sophos AntiVirus scan, MalwareBytes, Pandascan, Spybot S&D and none find anything out of the ordinary besides the initial find by malwarebytes that I already deleted

My System SpecsSystem Spec
16 Feb 2011   #2

Windows 7 Home Premium x64

Have you attempted to download a bootable AV and attempt to run a scan independent of windows. I use bitdefender recovery tool.
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16 Feb 2011   #3

Windows 7 home premium 32bit

I have not....I will look into that and try it this afternoon
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16 Feb 2011   #4
Microsoft MVP

Windows 7 Ultimate 32bit SP1

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22 Feb 2011   #5

Windows 7 home premium 32bit

I tried bit defender it found one trojan popup virus that I got rid of but Defender still will not load and my browser is still being hijaked only from
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22 Feb 2011   #6

Windows 7 Home Premium x64 SP1

My System SpecsSystem Spec
23 Feb 2011   #7

Windows 7 home premium 32bit

Ran SAS. It found one tracker registry entry and some cookies issues but nothing else. Google still being redirected randomly but not all the time and defender still will not work
My System SpecsSystem Spec
23 Feb 2011   #8
Microsoft MVP

Windows 7 Ultimate 32bit SP1

Download Combofix from any of the links below, and save it to your desktop.<--Important
Link 1
Link 2
Link 3

Click on this link Here to see a list of programs that should be disabled.
The list is not all inclusive. If yours is not listed and you don't know how to disable it, please ask.
If your anti-virus or firewall complains, please allow this script to run as it is not malicious.
Next: Disconnect from the internet. If you are on Cable or DSL, unplug your computer from the modem.
Next: Please disable all onboard security programs (all running with back ground protection) as it may hinder the scanner from working.
This includes Antivirus, Firewall, and any Spyware scanners that run in the background.
  • Double click combofix.exe and follow the prompts.
  • When finished, it will produce a log for you. Post that log and a HiJackthis log in your next reply
Note: Do not mouseclick combofix's window while its running. That may cause it to stall
Please be patient while the scan runs, at times it may appear to stall.
When finished and after reboot (in case it asks to reboot), it should open a log, combofix.txt.
Post this log in your next reply together with a new hijackthislog.
After rebooting ensure your Security applications have been re-enabled.
My System SpecsSystem Spec
23 Feb 2011   #9

Windows 7 home premium 32bit

Combofix and hijackthis log attached

Attached Files
File Type: txt ComboFix.txt (15.1 KB, 21 views)
File Type: log hijackthis.log (3.9 KB, 15 views)
My System SpecsSystem Spec
23 Feb 2011   #10
Microsoft MVP

Windows 7 Ultimate 32bit SP1

I see you have used Combofix before ...
ComboFix2.txt 2010-10-19 20:32
ComboFix3.txt 2009-04-07 15:12

Did you download a fresh copy of CF, or is it the same one you've been using?

Sophos is out of date, was this a trial or paid for version?

I'd like you to scan your machine with ESET OnlineScan
  1. Hold down Control and click on the following link to open ESET OnlineScan in a new window.
    ESET OnlineScan
  2. Click the button.
  3. For alternate browsers only: (Microsoft Internet Explorer users can skip these steps)
    1. Click on to download the ESET Smart Installer. Save it to your desktop.
    2. Double click on the icon on your desktop.
  4. Check
  5. Click the button.
  6. Accept any security warnings from your browser.
  7. Check
  8. Push the Start button.
  9. ESET will then download updates for itself, install itself, and begin scanning your computer. Please be patient as this can take some time.
  10. When the scan completes, push
  11. Push , and save the file to your desktop using a unique name, such as ESETScan. Include the contents of this report in your next reply.
  12. Push the button.
  13. Push
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