[virusinfo] W32/Mytob-AK
- From: "Mike" <mikebike@xxxxxxxxx>
- To: virusinfo@xxxxxxxxxxxxx
- Date: Tue, 26 Apr 2005 09:38:13 -0700
From; Sophos Alert System:
Name: W32/Mytob-AK
Aliases: WORM_MYTOB.BT
Type: Win32 worm
Date: 26 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.
Information about W32/Mytob-AK can be found at:
http://www.sophos.com/virusinfo/analyses/w32mytobak.html
W32/Mytob-AK is a mass-mailing worm and IRC backdoor Trojan.
W32/Mytob-AK is capable of spreading through operating system vulnerabilities,
including the LSASS (MS04-011) exploit.
W32/Mytob-AK can harvest email addresses from files on the infected computer
and from the Windows address book.
Emails sent by the worm have the following characteristics:
Subject line:
Error
Status
Server Report
Mail Transaction Failed
Mail Delivery System
hello
Good day
<blank>
Message body:
The message contains Unicode characters and has been sent as a binary
attachment.
Mail transaction failed. Partial message is available.
The message cannot be represented in 7-bit ASCII encoding and has been sent as
a binary attachment.
The original message was included as an attachment,
Here are your bank documents
W32/Mytob-AK copies itself to the Windows system folder as "taskgmr32.exe " and
creates the following registry entries in order to run automatically on
computer login:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
WINTASK =
taskgmr32.exe
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\
WINTASK =
taskgmr32.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\Run\
WINTASK =
taskgmr32.exe
The worm also creates the following registry entries:
HKCU\SYSTEM\CurrentControlSet\Control\Lsa\
WINTASK =
taskgmr32.exe
HKCU\Software\Microsoft\OLE\
WINTASK =
taskgmr32.exe
HKLM\SOFTWARE\Microsoft\Ole\
WINTASK =
taskgmr32.exe
W32/Mytob-AK copies itself to the root folder with the following filenames:
funny_pic.scr
my_photo2005.scr
see_this!!.scr
W32/Mytob-AK blocks access to security-related websites by writing the
following entries to the Windows 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.microsoft.com
127.0.0.1 www.trendmicro.com
W32/Mytob-AK may create a new file detected by Sophos as W32/Mytob-D.
This IDE file also includes detection for:
W32/Kelvir-T
http://www.sophos.com/virusinfo/analyses/w32kelvirt.html
Troj/Restrict-A
http://www.sophos.com/virusinfo/analyses/trojrestricta.html
Troj/LanFilt-I
http://www.sophos.com/virusinfo/analyses/trojlanfilti.html
Troj/StartPa-FS
http://www.sophos.com/virusinfo/analyses/trojstartpafs.html
Troj/Psyme-BT
http://www.sophos.com/virusinfo/analyses/trojpsymebt.html
Troj/Banker-CK
http://www.sophos.com/virusinfo/analyses/trojbankerck.html
Download the IDE file from:
http://www.sophos.com/downloads/ide/mytob-ak.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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