[virusinfo] W32/Mytob-E
- From: "Mike" <mikebike@xxxxxxxxx>
- To: virusinfo@xxxxxxxxxxxxx
- Date: Wed, 13 Apr 2005 10:05:07 -0700
From; Sophos Alert System:
Name: W32/Mytob-E
Aliases: WORM_MYTOB.J, Net-Worm.Win32.Mytob.h, W32/Mytob.gen@MM
Type: Win32 worm
Date: 13 April 2005
A virus identity (IDE) file which provides protection is
available now from the Sophos website, and will be incorporated
into the June 2005 (3.94) 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 a small number of
reports of this worm from the wild.
Note: The IDE issued for W32/Mytob-E at 08:15 GMT on 25 March
also contained detection for W32/Mytob-F. This IDE has now been
updated to enhance detection of W32/Mytob-E.
Information about W32/Mytob-E can be found at:
http://www.sophos.com/virusinfo/analyses/w32mytobe.html
W32/Mytob-E is a mass-mailing worm and backdoor Trojan that targets users of
Internet Relay Chat programs.
When first run W32/Mytob-E copies itself to the Windows system folder as
taskgmr.exe and creates the following registry entries:
HKCU\Software\Microsoft\OLE
WINTASK
taskgmr.exe
HKCU\SYSTEM\CurrentControlSet\Control\Lsa
WINTASK
taskgmr.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
WINTASK
taskgmr.exe
HKLM\SOFTWARE\Microsoft\Ole
WINTASK
taskgmr.exe
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
WINTASK
taskgmr.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
WINTASK
taskgmr.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
WINTASK
taskgmr.exe
W32/Mytob-E 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-E 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:
W32/Mytob-F
http://www.sophos.com/virusinfo/analyses/w32mytobf.html
Download the IDE file from:
http://www.sophos.com/downloads/ide/mytob-e.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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