Qhost - 10.04.03
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Update 10.10.03 - Microsoft has patched this exploit
http://www.microsoft.com/security/security_bulletins/MS03-040.asp
 http://www.microsoft.com/technet/security/bulletin/MS03-040.asp
a few additional details, also in the host file was 88.88.88.88 elite and on a different PC's
host file (In Sandwich) I found 127.127.127.127 elite
There is a method to stop add sites using the host file explained here:
And one of my favorite sites is grc.com Look there for free security utilities
written by Steve Gibson who's Spinrite product is a familar name to most PC technicians.
10.06.03
I used Spybot search and distroy when the kid complained that no search sites were
working. Spybot S+D found something it labeled 'Common Hijacker' redirected host
search.msn.com=207.44.194.56. The exploit occurred on 09.30.03 and 10.01.03.
I let spybot delete it but the PC still had problems.
Note: this kid likes neopets.com and related seemingly harmless sites
Qhosts seemed to be related to a site www.fortunecity.com as this problem began
on 09.30.03; There was a cookie from fortunecity with that date.
I found the DNS settings had been changed to 69.57.146.14 and 69.57.147.175
owned by Everyones Internet. Also, if a common search page like www.google.com
was used, eventually a page labeled 'Cpanel' would come up and it had a link to
www.cPanel.net - a site also related to Everyones Internet - Ev1.servers.net
I ultimately found that the host file in c:\windows had been appended. the entries
looked like this: 207.44.194.56 www.google.com
The exploit actually backed up the host file but with the extra entries.
Once I reset the DNS back to what it was supposed to be ( my local server )
and removed the extra entries in the host file, the pc was able to go to search sites.
A folder C:\Bdtmp\Tmp that was created on 09.30.03 and the DNS setting
had "HostName"="host" and "Domain"="mydomain.com", in the registry key;
HKCU\Software\Microsoft\Internet Explorer\Main,
"Search Page"="http://www.google.com" and "Search Bar"="http://www.google.com/ie"
had been added. I deleted those.
Stanford has a good write-up on the exploit
Qhosts Trojan at Stanford -- 2 October 2003
Symantec has more details and specifies registry changes Here ,
Network associates; NAI writeup of Qhost and NAI writeup of related issue
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