Security Incidents mailing list archives
Re: Unknown Hosts file
From: "<-delusion->" <delusi0n () bellsouth net>
Date: Mon, 1 Apr 2002 22:07:53 -0500
a hosts file can be used to redirect a url to a different ip. like for example a malicious user can mirror www.hotmail.com and put it on their webserver and edit it so that when you log in it sends the login and password to the owner of the webserver, then they proceed to edit your hosts file and put in a field like: hotmail.com 1.2.3.4 www.hotmail.com 1.2.3.4 where 1.2.3.4 is the IP of their webserver. so then when anyone types in www.hotmail.com in internet explorer on your computer they go to the user's webserver and not the real hotmail.com. Since the malicious user mirrored hotmail.com a user at your computer wouldn't know the difference and proceed to login. Instead of logging the person into hotmail, it sends the login and password a user supplies to the malicious user. So you get what i'm saying right? for more info check out: http://www.lameindustries.org/tutorials/windowshosts/index.shtml -delusion http://www.digital-delusions.com ----- Original Message ----- From: "David Tan" <dtan () chipscc com> To: <incidents () securityfocus com> Sent: Monday, April 01, 2002 7:31 PM Subject: Unknown Hosts file
I have a client machine running Windows 2000 Professional. All of a sudden, one day, the user was unable to access several of the most popular websites (i.e. google, yahoo, cnn, etc.). I noticed that the machine was attempting to access the wrong IP address for all the websites, in fact, it was attempting to access the SAME IP address for every website in the group. After some research, I found there was a Hosts file with all the domains in question listed, and the erroneous IP address. Has anyone ever come accross an incident where a virus or trojan would place a Hosts file onto a system. I have thoroughly scanned the machine for viruses, open ports, etc. and found nothing. Is there anything else I should be on the lookout for? --------------------------------------------------------------------------
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Current thread:
- Unknown Hosts file David Tan (Apr 01)
- Re: Unknown Hosts file Michael ENGEL (Apr 02)
- Re: Unknown Hosts file H C (Apr 02)
- Re: Unknown Hosts file ePAc (Apr 02)
- Re: Unknown Hosts file <-delusion-> (Apr 02)
- <Possible follow-ups>
- RE: Unknown Hosts file BRAD GRIFFIN (Apr 02)
- RE: Unknown Hosts file Brenna Primrose (Apr 02)