Malware causing multiple antivirus updates, windows updates, patch downloads to fail.

[saderax]

I'm usually pretty savvy when it comes to de-virusing a computer, but this one has got me completely stumped.

I recently noticed a browser hijack where in all browsers, any result from yahoo.com is redirected to porn. Also, every update (anti-malware application download, update, or windows kb download, or windows update) will fail, sometimes with a DNS failure, sometimes with a 404 at all times.

I have tried to download

• Ad-Aware (updates fail, returns 404)
• AVG Antivirus (updates fail, dns times out)
• Avira AntiVir (updates fail, returns 404)
• Microsoft Windows Update fails to open (just redir's back to windows update)
• Microsoft KB Downloads (Service Pack 3, various KB patches return 404)

Can anyone help identify this? I updates avira, and avg manually (via a cd from another computer) and they say the computer is clean. All Conficker scan tools say the computer is clean. Microsoft live onecare says the computer is clean.

I also add that I'm going to format & reinstall, but I would really like to know what I have (had) so that when I am trying to recover data from the old HDD I don't reinfect myself.

Thanks in advance. Any help would be much appreciated.

[TimW]

Welcome to Major Geeks!


Please follow the instructions in the READ & RUN ME FIRST link given futher down and attach the requested logs when you finish these instructions.

• If you have problems where no tools seem to run, please try following the steps given in the below and then continue on no matter what you find. You only need to try the TDSSserv steps if having problems getting scans in the Read & Run Me First.
  
  • TDSSserv Non-Plug & Play Driver Disable
• If something does not run, write down the info to explain to us later but keep on going.
• Do not assume that because one step does not work that they all will not.

READ & RUN ME FIRST. Malware Removal Guide


Helpful Notes:

1. If you run into problems trying to run the READ & RUN ME or any of the scans in normal boot mode. You can run steps in safe boot mode but make sure you tell us what you did later when you post logs. See the below if you do not know how to boot in safe mode:
   
   • Starting your computer in Safe mode
2. If you have problems downloading on the problem PC, download the tools and the manual updates for SUPERAntiSpyware, Malwarebytes and Spybot ( links are given in the READ & RUN ME) onto another PC and then burn to a CD. Then copy them to the problem PC. You will have to skip getting updates if (and only if) your internet connection does not work. Yes you could use a flash drive too but flash drives are writeable and infections can spread to them.
3. To avoid addtional delay in getting a response, it is strongly advise that after completing the READ & RUN ME you also read this sticky Don't Bump! It Only Hurts You!!!. Any additional post is a bump which will add more delay. Once you attach the logs, your thread will be in the work queue and as stated our system works the oldest threads FIRST.