[virusinfo] Sophos Anti-Virus IDE alert: W32/Agobot-GA
- From: "Mike" <mikebike@xxxxxxxxx>
- To: virusinfo@xxxxxxxxxxxxx
- Date: Fri, 09 Apr 2004 13:10:07 -0700
From; Sophos Alert System:
Name: W32/Agobot-GA
Aliases: Backdoor.Agobot.li, W32/Gaobot.worm.gen.g, W32.Gaobot.WX,
WORM_AGOBOT.WN
Type: Win32 worm
Date: 9 April 2004
A virus identity (IDE) file which provides protection is
available now from the Sophos website, and will be incorporated
into the May 2004 (3.81) release of Sophos Anti-Virus.
Enterprise Manager and PureMessage customers will be
automatically protected at their next scheduled update.
At the time of writing, Sophos has received just one report of
this worm from the wild.
Information about W32/Agobot-GA can be found at:
http://www.sophos.com/virusinfo/analyses/w32agobotga.html
Description
W32/Agobot-GA is a backdoor Trojan and worm which spreads to computers
protected by weak passwords.
When first run, W32/Agobot-GA moves itself to the Windows system folder as
windns32.exe and creates the following registry entries to run itself on
startup:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\WinDNS
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\WinDNS
Each time W32/Agobot-GA is run it attempts to connect to a remote IRC server
and join a specific channel. It then runs continuously in the background,
allowing a remote intruder to access and control the computer via IRC
channels.
W32/Agobot-GA attempts to terminate and disable various anti-virus and
security related programs and modifies the HOSTS file located at
%Windows%\System32\Drivers\etc\HOSTS. Selected anti-virus websites are
mapped to the loopback address 127.0.0.1 in an attempt to prevent access to
these sites. Typically the following mappings will be appended to the HOSTS
file:
127.0.0.1 www.symantec.com
127.0.0.1 securityresponse.symantec.com
127.0.0.1 symantec.com
127.0.0.1 www.sophos.com
127.0.0.1 sophos.com
127.0.0.1 www.mcafee.com
127.0.0.1 mcafee.com
127.0.0.1 liveupdate.symantecliveupdate.com
127.0.0.1 www.viruslist.com
127.0.0.1 viruslist.com
127.0.0.1 viruslist.com
127.0.0.1 f-secure.com
127.0.0.1 www.f-secure.com
127.0.0.1 kaspersky.com
127.0.0.1 www.avp.com
127.0.0.1 www.kaspersky.com
127.0.0.1 avp.com
127.0.0.1 www.networkassociates.com
127.0.0.1 networkassociates.com
127.0.0.1 www.ca.com
127.0.0.1 ca.com
127.0.0.1 mast.mcafee.com
127.0.0.1 my-etrust.com
127.0.0.1 www.my-etrust.com
127.0.0.1 download.mcafee.com
127.0.0.1 dispatch.mcafee.com
127.0.0.1 secure.nai.com
127.0.0.1 nai.com
127.0.0.1 www.nai.com
127.0.0.1 update.symantec.com
127.0.0.1 updates.symantec.com
127.0.0.1 us.mcafee.com
127.0.0.1 liveupdate.symantec.com
127.0.0.1 customer.symantec.com
127.0.0.1 rads.mcafee.com
127.0.0.1 trendmicro.com
127.0.0.1 www.trendmicro.com
Recovery
Please follow the instructions for removing worms.
This IDE file also includes detection for:
W32/Agobot-GC
http://www.sophos.com/virusinfo/analyses/w32agobotgc.html
W32/Doomber-B
http://www.sophos.com/virusinfo/analyses/w32doomberb.html
W32/Sdbot-HK
http://www.sophos.com/virusinfo/analyses/w32sdbothk.html
Troj/StartPa-EB
http://www.sophos.com/virusinfo/analyses/trojstartpaeb.html
Download the IDE file from:
http://www.sophos.com/downloads/ide/agobotga.ide
Download all the IDE files available for the current version of
Sophos Anti-Virus in a single compressed file. The file is
available in two formats:
Zip file:
http://www.sophos.com/downloads/ide/ides.zip
Self-extracting file:
http://www.sophos.com/downloads/ide/ides.exe
Read about how to use IDE files at
http://www.sophos.com/downloads/ide/using.html
---------------------------------------------------------------------
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