[virusinfo] W32/Agobot-ZH
- From: "Mike" <mikebike@xxxxxxxxx>
- To: virusinfo@xxxxxxxxxxxxx
- Date: Thu, 13 May 2004 09:03:38 -0700
From; Sophos Alert System:
Name: W32/Agobot-ZH
Type: Win32 worm
Date: 13 May 2004
A virus identity (IDE) file which provides protection is
available now from the Sophos website, and will be incorporated
into the June 2004 (3.82) release of Sophos Anti-Virus.
Customers using Enterprise Manager, PureMessage and any of the
Sophos small business solutions 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-ZH can be found at:
http://www.sophos.com/virusinfo/analyses/w32agobotzh.html
Description
W32/Agobot-ZH copies itself to network shares with weak passwords and
attempts to spread to computers using the DCOM RPC and RPC locator
vulnerabilities.
These vulnerabilities allow the worm to execute its code on target computers
with system level privileges. For further information on these
vulnerabilities and for details on how to patch the computer against such
attacks please see Microsoft security bulletins MS03-026 and MS03-001.
When first run W32/Agobot-ZH copies itself to the Windows system folder with
the filename wintcp.exe and creates the following registry entries so that
the worm is run when Windows starts up:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
Windows TCP/IP = wintcp.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices\
Windows TCP/IP = wintcp.exe
W32/Agobot-ZH connects to a remote IRC server and joins a specific channel.
The backdoor functionality of the worm can then be accessed by an attacker
using the IRC network.
The worm also attempts to terminate and disable various security related
programs.
Recovery
Please follow the instructions for removing worms
Download the IDE file from:
http://www.sophos.com/downloads/ide/agobotzh.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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