Full Disclosure mailing list archives

Re: Windows hosts file changing.


From: "Exibar" <exibar () thelair com>
Date: Wed, 22 Oct 2003 10:47:35 -0400

I have seen qhosts act in strange ways.  Qhosts does indeed edit the HOSTS
file, sometimes will add those registry keys but not all.  Sometimes it will
add the reg keys but leave the HOSTS file alone.  I've seen it replace the
real HOSTS file, and I've also seen it add a new HOSTS file into the temp
directory.

  Qhosts doesn't always respond predictably from what I've seen.

  Exibar


----- Original Message ----- 
From: "Brian Eckman" <eckman () umn edu>
To: "David Gianndrea" <dgianndrea () comsquared com>
Cc: "Kevin Gerry" <poof1 () cox net>; <Full-Disclosure () lists netsys com>
Sent: Wednesday, October 22, 2003 9:50 AM
Subject: Re: [Full-disclosure] Windows hosts file changing.




David Gianndrea wrote:
Kind of sounds like this...

http://vil.nai.com/vil/content/v_100719.htm


Kevin Gerry wrote:

Does -ANYBODY- know how it occurs?

I've had this happen to a couple boxes of mine now...

New one:
-- 
127.0.0.1    localhost
66.40.16.131    livesexlist.com
66.40.16.131    lanasbigboobs.com
66.40.16.131    thumbnailpost.com
66.40.16.131    adult-series.com
66.40.16.131    www.livesexlist.com
66.40.16.131    www.lanasbigboobs.com
66.40.16.131    www.thumbnailpost.com
66.40.16.131    www.adult-series.com
-- 

Any idea how the search site is replacing that? =/ It's starting to
piss me
off =/ I had some custom information in there that's now overwritten
(Not
backed up)

Thanks =/


Actually, I don't think it sounds a damn thing like Qhosts.

Qhosts modifies DHCP-issued DNS server settings in the registry, and
creates a new HOSTS file and tweaks the registry to use that HOSTS file.
It doesn't touch the original HOSTS file.

This post exhibits no Qhosts behavior, and Qhosts doesn't exhibit any
of this behavior. I think Daniel got it right - quit going to porn
sites. Better yet, quit going to porn sites advertised in Spam.

Also, to respond to another comment, the MS03-040 patch might *not*
address this type of attack on a system. Internet Explorer fully patched
with default settings *still* allows silent delivery and install of
executables. POC was sent to this list weeks ago.

Brian
-- 
Brian Eckman
Security Analyst
OIT Security and Assurance
University of Minnesota
612-626-7737

"There are 10 types of people in this world. Those who
understand binary and those who don't."

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