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Virus? IE throws web config referencing defaultredirect to mycustompage.htm

Posted on 2011-09-30
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Last Modified: 2012-05-12
at a school district, randomly throughout the day, IE users are reporting that IE is throwing up a web config page referencing a default redirect to a mycustompage.htm.

I"m thinking virus.  Malwarebytes can't update either.

this is random users, not all.  

ideas where to start looking?

thanks

cliff
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Question by:crp0499
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khairil earned 2000 total points
ID: 36894588
Hi,

1. Virus? Might be. We have same problem last two weeks on one of our falculties. The end up that one lecturer PC is infected by some kind of virus that act as DHCP supplying bogus IP address and also DNS. Any request to the Internet end up to same web page of the scammers. So you might want to check if there is some PC infected with this kind of viruses.

The PC that showing the scammer page might not get infected, but it can give you clue the DHCP IP range, and if you are network admin you can find it (but not so easy).

2. Other possibility is something have change the hosts file on that PC, try check the host file, for Windows it stays at SystemRoot%\system32\drivers\etc\hosts

3. Also try other browser, do they have same problem, if not then check the proxy setting of the IE.
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