KoobFace Virus - Unable to Access Internet

Acer Aspire one aoa150-1570 netbook
May 10, 2010 at 12:07:05
Specs: Windows XP, N270 1.6Ghz/1 GB
Hey All:

One of my PCs was infected with the KoobFace virus/worm. Now, after removing it, I am unable to access the internet.

Here are the specifics on my system and the steps I've gone through so far.

PC: Acer Netbook
Operating System: Windows XP Home, SP3
Browser: Firefox v3.6.3
Security Software: Avast Free 5.0.545. Malwarebytes 1.46

At time of infection, was running AVG, however, when I realized that AVG apparently doesn't have a boot-time scan, I uninstalled it and installed Avast.

Steps taken:

- Ran Avast Boot-time Scan
- Ran Avast Full Scan
- Ran Malwarebytes scan - KoobFace detected and removed
- Ran CC Cleaner
- Ran MV RegClean - Program removed a number of Koobface entries from the registry.

When I try to access any website, I get the error "The Connection was Reset". However, I am able to access Gmail, and it appears I can access anything running a secure (https) server with no problem.

I can ping google, yahoo, etc. with no problem - just can't access them via a browser. It's not a problem with my network, my other PCs can access the Internet fine. Problem is isolated to just the infected laptop.

Thinking that perhaps this was an issue with Firefox, downloaded Chrome from another machine and installed it with the same result.

Checked my Hosts file and verified that there were no issues.

Scratching my head at this point - any help would be greatly appreciated.


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May 11, 2010 at 21:34:42
Check to see that your connection hasn't been reset to use a proxy.
Viruses do that quite often

Some HELP in posting on Computing.net plus free progs and instructions Cheers

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May 12, 2010 at 17:43:45
to remove koobface virus follow instructions at http://virusremoval.info

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May 12, 2010 at 18:14:32
Like I said in the OP - already removed the virus.

In any case, the issue turns out to be a problem with Avast - the Web Shield is blocking access.

Thanks for the replys

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Related Solutions

May 20, 2010 at 21:42:48
2 more steps u need to take
1st, run Microsoft malicious Software removal tool
2; Do the manual removal steps to remove win32 koobface worm manually,see the manual removal instructions

Happy Virus Free Computing(.net)
Virus Removal tutorials and Softwares

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