[virusinfo] W32/Mytob-G
- From: "Mike" <mikebike@xxxxxxxxx>
- To: virusinfo@xxxxxxxxxxxxx
- Date: Fri, 25 Mar 2005 09:20:04 -0800
From; Sophos Alert System:
Name: W32/Mytob-G
Aliases: W32/Mytob.gen@xxxx
Type: Win32 worm
Date: 25 March 2005
A virus identity (IDE) file which provides protection is
available now from the Sophos website, and will be incorporated
into the May 2005 (3.93) release of Sophos Anti-Virus.
Customers using EM Library, PureMessage or any of our Sophos
small business solutions will be automatically protected at
their next scheduled update.
At the time of writing, Sophos has received no reports from
users affected by this worm. However, we have issued this
advisory following enquiries to our support department from
customers.
Information about W32/Mytob-G can be found at:
http://www.sophos.com/virusinfo/analyses/w32mytobg.html
W32/Mytob-G is a mass-mailing worm and backdoor Trojan that targets users of
Internet Relay Chat programs.
When first run W32/Mytob-G copies itself to the Windows system folder as
tagmr.exe and creates the following registry entries:
HKCU\Software\Microsoft\OLE
Windows Tagmsnger
tagmr.exe
HKCU\SYSTEM\CurrentControlSet\Control\Lsa
Windows Tagmsnger
tagmr.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Windows Tagmsnger
tagmr.exe
HKLM\SOFTWARE\Microsoft\Ole
Windows Tagmsnger
tagmr.exe
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
Windows Tagmsnger
tagmr.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Windows Tagmsnger
tagmr.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Windows Tagmsnger
tagmr.exe
W32/Mytob-G copies itself to the root folder as:
funny_pic.scr
my_photo2005.scr
see_this!!.scr
and creates the helper file hellmsn.exe (detected by Sophos as W32/Mytob-D) in
the same location.
W32/Mytob-G also appends the following to the HOSTS file to deny access to
security related websites:
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.microsoft.com
127.0.0.1 www.trendmicro.com
This IDE file also includes detection for:
Troj/Dloader-JX
http://www.sophos.com/virusinfo/analyses/trojdloaderjx.html
Troj/Agent-DC
http://www.sophos.com/virusinfo/analyses/trojagentdc.html
Troj/Drever-C
http://www.sophos.com/virusinfo/analyses/trojdreverc.html
Download the IDE file from:
http://www.sophos.com/downloads/ide/mytobg.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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