Re: bestfriends.scr/*Bot

[Mark Wilson <wilsodm () AUBURN EDU>]

What happens is those who use AIM will see a friend's away message that
says "OMG LOOK http://www.anylink.com/bestfriends.scr !?!?!?!?!".
People click on the link and the malware is downloaded to their system.
The malware is a form of SD/Goa/WhateverBot and may open a backdoor on
port 113/tcp or another port.  The Botnet begins communicating to the
compromised host via rBot commands (see
http://www.angelfire.com/theforce/travon1120/RxBotCMDLIST.html .  we
have seen the command avscan issued to scan for vulnerable machines for
lsass and the download command to drop malware on the host).  The cycle
continues as the compromised system seek to exploit more systems on
local networks.   Exploits are realized because of unpatched systems and
weak/blank paswords.

I have accessed some of the above "bestfriend" links and scanned the
malware via http://virusscan.jotti.org .  We use McAfee exclusive here
at AU but the virus vendors are not keeping up with all the variants of
this Botware...

Mark Wilson
GCIA, CISSP #53153
Network Security Specialist
Auburn University
(334) 844-9347

> > > wood () JUNIATA EDU 2/10/2005 7:51:56 AM >>>
Does this traffic appear to run on any particular port?  I have two
student computers sending traffic to this address to port 8080.  Also,
has Symantec added this to their definitions?  I don't see any
reference
to this.

Anne Wood
Network Manager
Juniata College
814-641-5310

-----Original Message-----
From: The EDUCAUSE Security Discussion Group Listserv
[mailto:SECURITY () LISTSERV EDUCAUSE EDU] On Behalf Of Mark Wilson
Sent: Tuesday, February 08, 2005 12:15 PM
To: SECURITY () LISTSERV EDUCAUSE EDU
Subject: [SECURITY] bestfriends.scr/*Bot

Be on the lookout for this one as we continue to see this.  There is a
bleeding edge snort rule for bestfriends.scr.

If you notice traffic going to 209.152.177.208, you probably have
infected hosts on your network.

This malware spreads via AIM (embedded URL in away message) and drops
AgoBot/GoaBot/*Bot on the victim's host. There are several strains
going
around.

More info can be found at http://www.jayloden.com/BestFriends.htm

Mark Wilson
GCIA, CISSP #53153
Network Security Specialist
Auburn University
(334) 844-9347

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