Trojan.Encoder.3887

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run] 'addon_v57' = '%APPDATA%\mxidobd.exe'

Creates or modifies the following files:

%ALLUSERSPROFILE%\Start Menu\Programs\Startup\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Start Menu\Programs\Startup\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Start Menu\Programs\Startup\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png

Malicious functions:

Creates and executes the following:

'%APPDATA%\mxidobd.exe'

Executes the following:

'<SYSTEM32>\cmd.exe' /c DEL <Full path to virus>

Terminates or attempts to terminate

the following system processes:

<SYSTEM32>\cmd.exe

the following user processes:

ecmd.exe

Modifies file system:

Creates the following files:

C:\Documents and Settings\Default User\Cookies\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Cookies\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Favorites\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Favorites\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Cookies\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Application Data\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Application Data\Microsoft\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Application Data\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Application Data\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Local Settings\Application Data\Microsoft\Windows Media\9.0\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Local Settings\Application Data\Microsoft\Windows Media\9.0\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Local Settings\Application Data\Microsoft\Windows Media\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Local Settings\Application Data\Microsoft\Windows Media\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Local Settings\Application Data\Microsoft\Windows Media\9.0\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Local Settings\Application Data\Microsoft\Media Player\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Favorites\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Local Settings\Application Data\Microsoft\Media Player\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Local Settings\Application Data\Microsoft\Media Player\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Application Data\Microsoft\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Application Data\Microsoft\SystemCertificates\My\CRLs\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Application Data\Microsoft\SystemCertificates\My\CRLs\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Application Data\Microsoft\SystemCertificates\My\CTLs\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Application Data\Microsoft\SystemCertificates\My\CRLs\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Application Data\Microsoft\SystemCertificates\My\Certificates\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Application Data\Microsoft\Media Player\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Application Data\Microsoft\Media Player\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Application Data\Microsoft\SystemCertificates\My\Certificates\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Application Data\Microsoft\SystemCertificates\My\Certificates\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Application Data\Microsoft\SystemCertificates\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Application Data\Microsoft\SystemCertificates\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Application Data\Microsoft\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Application Data\Microsoft\SystemCertificates\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Application Data\Microsoft\SystemCertificates\My\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Application Data\Microsoft\SystemCertificates\My\CTLs\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Application Data\Microsoft\SystemCertificates\My\CTLs\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Application Data\Microsoft\SystemCertificates\My\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Application Data\Microsoft\SystemCertificates\My\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Local Settings\Application Data\Microsoft\Windows Media\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\Content.IE5\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Local Settings\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Local Settings\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\My Documents\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Local Settings\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\Content.IE5\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\Content.IE5\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Local Settings\History\History.IE5\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Local Settings\Application Data\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Local Settings\History\History.IE5\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Local Settings\History\History.IE5\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Local Settings\Application Data\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Local Settings\Application Data\Microsoft\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Local Settings\Application Data\Microsoft\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Local Settings\Application Data\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Local Settings\Application Data\Microsoft\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Local Settings\Temp\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
C:\Documents and Settings\Default User\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Local Settings\Temp\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Local Settings\History\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Local Settings\History\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Local Settings\Temp\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Local Settings\History\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Documents\My Pictures\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Documents\My Pictures\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Documents\My Videos\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Documents\My Videos\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Documents\My Pictures\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Documents\My Pictures\Sample Pictures\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Documents\My Music\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Documents\My Pictures\Sample Pictures\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Documents\My Pictures\Sample Pictures\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\DRM\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\DRM\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Favorites\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Favorites\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\DRM\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Documents\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Documents\My Videos\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Documents\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Documents\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Documents\My Music\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Documents\My Music\My Playlists\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Documents\My Music\My Playlists\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Documents\My Music\Sample Music\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Documents\My Music\My Playlists\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
<Current directory>\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%HOMEPATH%\My Documents\recover_file_nbwiyxwiw.txt
%APPDATA%\mxidobd.exe
<Current directory>\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
<Current directory>\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Documents\My Music\Sample Playlists\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Documents\My Music\Sample Playlists\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Documents\My Music\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Documents\My Music\Sample Playlists\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Documents\My Music\Sample Playlists\0338E140\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Documents\My Music\Sample Music\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Documents\My Music\Sample Music\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Documents\My Music\Sample Playlists\0338E140\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Documents\My Music\Sample Playlists\0338E140\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Favorites\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Start Menu\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Start Menu\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Templates\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Start Menu\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Start Menu\Programs\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Start Menu\Programs\Games\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Start Menu\Programs\Games\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Start Menu\Programs\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Start Menu\Programs\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Application Data\Microsoft\Internet Explorer\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
C:\Documents and Settings\Default User\Application Data\Microsoft\Internet Explorer\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Application Data\Microsoft\Media Player\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
C:\Documents and Settings\Default User\Application Data\Microsoft\Internet Explorer\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Templates\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Templates\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Start Menu\Programs\Games\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Entertainment\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Communications\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Entertainment\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Entertainment\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Communications\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Accessibility\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Accessibility\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Communications\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Start Menu\Programs\Accessories\Accessibility\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Start Menu\Programs\Administrative Tools\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Start Menu\Programs\Accessories\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Start Menu\Programs\Administrative Tools\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html
%ALLUSERSPROFILE%\Start Menu\Programs\Administrative Tools\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Start Menu\Programs\Accessories\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Start Menu\Programs\Accessories\System Tools\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.txt
%ALLUSERSPROFILE%\Start Menu\Programs\Accessories\System Tools\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Start Menu\Programs\Accessories\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.png
%ALLUSERSPROFILE%\Start Menu\Programs\Accessories\System Tools\_H_e_l_p_RECOVER_INSTRUCTIONS+xdn.html

Deletes itself.

Network activity:

Connects to:

'la###sdehaan.be':80
'ch####ricoop.net':80
'fe#######nung-walchensee-pur.de':80
'io##is.org':80
'po####drusgroup.com':80
'es####setvie.com':80

TCP:

HTTP POST requests:

http://la###sdehaan.be/modules/mod_cmscore/mzsys.php
http://ch####ricoop.net/tmp/mzsys.php
http://fe#######nung-walchensee-pur.de/tmp/mzsys.php
http://io##is.org/modules/mod_fxprev/libraries/mzsys.php
http://po####drusgroup.com/components/com_acymailing/views/user/tmpl/mzsys.php
http://es####setvie.com/modules/mod_cmscore/mzsys.php

UDP:

DNS ASK la###sdehaan.be
DNS ASK ch####ricoop.net
DNS ASK fe#######nung-walchensee-pur.de
DNS ASK io##is.org
DNS ASK po####drusgroup.com
DNS ASK es####setvie.com

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