Trojan.DownLoader11.40031

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'aeEkEEcE.exe' = '%ALLUSERSPROFILE%\BWogoUMg\aeEkEEcE.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pUccUkoM.exe' = '%HOMEPATH%\fCkYUMIQ\pUccUkoM.exe'

Malicious functions:

To complicate detection of its presence in the operating system,

forces the system hide from view:

hidden files
file extensions

blocks the following features:

User Account Control (UAC)

Creates and executes the following:

'%ALLUSERSPROFILE%\BWogoUMg\aeEkEEcE.exe'
'%HOMEPATH%\fCkYUMIQ\pUccUkoM.exe'

Executes the following:

'<SYSTEM32>\cmd.exe' /c ""%TEMP%\haoIoIYw.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\KCUMUQYI.bat" "<Full path to virus>""
'<SYSTEM32>\wbem\wmiadap.exe' /R /T
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\NeIcEIUM.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\pasYYgUU.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\MiEUMcME.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\BOskcoMI.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\hAgUkUAQ.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\iIkEMIII.bat" "<Full path to virus>""
'<SYSTEM32>\reg.exe' add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /d 0 /t REG_DWORD /f
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\dMcgMAoE.bat" "<Full path to virus>""
'<SYSTEM32>\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v HideFileExt /t REG_DWORD /d 1
'<SYSTEM32>\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v Hidden /t REG_DWORD /d 2
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\pQcYYook.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\dKIEEccg.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\vCogEUYo.bat" "<Full path to virus>""
'<SYSTEM32>\cscript.exe' %TEMP%\file.vbs
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\HogcEoIg.bat" "<Full path to virus>""

Modifies file system :

Creates the following files:

<Current directory>\YQEy.exe
C:\RCX13.tmp
<Current directory>\oQMG.ico
<Current directory>\wgse.exe
C:\RCX12.tmp
<Current directory>\bwYm.ico
<Current directory>\QwYK.exe
C:\RCX15.tmp
<Current directory>\jAYW.ico
<Current directory>\DwAO.exe
C:\RCX14.tmp
<Current directory>\wQwe.ico
<Current directory>\EQgm.exe
<Current directory>\Uokk.ico
<Current directory>\LgAU.ico
<Current directory>\mUcI.exe
C:\RCXF.tmp
<Current directory>\PIES.exe
C:\RCXE.tmp
%TEMP%\NeIcEIUM.bat
%TEMP%\kikEwUYY.bat
<Current directory>\XkYo.ico
<Current directory>\XowE.exe
C:\RCX11.tmp
<Current directory>\JUMw.ico
<Current directory>\fYIS.exe
C:\RCX10.tmp
%TEMP%\hAgUkUAQ.bat
%TEMP%\SMgMUosM.bat
%TEMP%\iIkEMIII.bat
%TEMP%\pasYYgUU.bat
%TEMP%\VUUIgYwI.bat
%TEMP%\GikAUgAw.bat
<Current directory>\sAQU.ico
%TEMP%\LKYAQYkw.bat
%TEMP%\BOskcoMI.bat
%TEMP%\NUIAAIkY.bat
<Current directory>\nIcY.exe
C:\RCX1A.tmp
%TEMP%\MiEUMcME.bat
C:\RCX19.tmp
<Current directory>\acQq.exe
C:\RCX17.tmp
%TEMP%\haoIoIYw.bat
C:\RCX16.tmp
%TEMP%\GWwMwcMU.bat
<Current directory>\eMMg.ico
<Current directory>\AsAU.ico
%TEMP%\KCUMUQYI.bat
<Current directory>\sgoa.ico
<Current directory>\esoI.exe
<Current directory>\jgMe.exe
C:\RCX18.tmp
%TEMP%\ssYEYUYU.bat
<Current directory>\WAQc.ico
C:\RCX3.tmp
%TEMP%\HogcEoIg.bat
<Current directory>\ZscG.ico
C:\RCX2.tmp
<Current directory>\rQQI.ico
<Current directory>\noMW.exe
<Current directory>\kUUM.exe
C:\RCX5.tmp
<Current directory>\JAMG.ico
<Current directory>\SQgA.exe
C:\RCX4.tmp
<Current directory>\xIcS.ico
<Current directory>\sMUY.exe
<Current directory>\VEwq.exe
%HOMEPATH%\f.inf
%TEMP%\dMcgMAoE.bat
%TEMP%\oAwkowMk.bat
%TEMP%\BakIcMUY.bat
<Current directory>\<Virus name>
%TEMP%\pQcYYook.bat
<Current directory>\AAYq.exe
C:\RCX1.tmp
<Current directory>\Vkks.ico
%TEMP%\file.vbs
%TEMP%\TogIAQoE.bat
<Current directory>\WYIY.ico
%TEMP%\vCogEUYo.bat
<Current directory>\IQwW.exe
C:\RCXB.tmp
<Current directory>\AMkU.exe
C:\RCXA.tmp
<Current directory>\rAgI.ico
<Current directory>\Fowi.ico
<Current directory>\noAm.ico
<Current directory>\dIcc.exe
C:\RCXD.tmp
<Current directory>\NEYW.exe
%TEMP%\LOUosYgY.bat
C:\RCXC.tmp
<Current directory>\JoEw.ico
<Current directory>\lMQm.exe
C:\RCX7.tmp
<Current directory>\qEwo.ico
C:\RCX6.tmp
%TEMP%\MgcwcwgA.bat
<Current directory>\pUgo.ico
<Current directory>\pEAU.exe
C:\RCX9.tmp
%TEMP%\QyUAwgEY.bat
%TEMP%\dKIEEccg.bat
C:\RCX8.tmp
<Current directory>\XUYE.ico
<Current directory>\vQso.exe

Sets the 'hidden' attribute to the following files:

%ALLUSERSPROFILE%\BWogoUMg\aeEkEEcE.exe
%HOMEPATH%\fCkYUMIQ\pUccUkoM.exe

Deletes the following files:

%TEMP%\kikEwUYY.bat
<Current directory>\YQEy.exe
<Current directory>\wgse.exe
<Current directory>\Uokk.ico
<Current directory>\oQMG.ico
<Current directory>\EQgm.exe
<Current directory>\bwYm.ico
<Current directory>\QwYK.exe
<Current directory>\mUcI.exe
<Current directory>\LgAU.ico
<Current directory>\PIES.exe
<Current directory>\WAQc.ico
<Current directory>\XowE.exe
<Current directory>\XkYo.ico
<Current directory>\fYIS.exe
<Current directory>\JUMw.ico
<Current directory>\sgoa.ico
%TEMP%\VUUIgYwI.bat
<Current directory>\AsAU.ico
<Current directory>\esoI.exe
%TEMP%\LKYAQYkw.bat
%TEMP%\NUIAAIkY.bat
%TEMP%\GikAUgAw.bat
%TEMP%\SMgMUosM.bat
<Current directory>\jAYW.ico
%TEMP%\GWwMwcMU.bat
<Current directory>\wQwe.ico
<Current directory>\DwAO.exe
<Current directory>\jgMe.exe
%TEMP%\ssYEYUYU.bat
<Current directory>\acQq.exe
<Current directory>\eMMg.ico
<Current directory>\ZscG.ico
<Current directory>\sMUY.exe
<Current directory>\rQQI.ico
<Current directory>\kUUM.exe
<Current directory>\JAMG.ico
<Current directory>\lMQm.exe
<Current directory>\xIcS.ico
<Current directory>\SQgA.exe
%TEMP%\TogIAQoE.bat
<Current directory>\AAYq.exe
%TEMP%\BakIcMUY.bat
%TEMP%\oAwkowMk.bat
<Current directory>\Vkks.ico
<Current directory>\noMW.exe
<Current directory>\WYIY.ico
<Current directory>\VEwq.exe
<Current directory>\rAgI.ico
<Current directory>\NEYW.exe
<Current directory>\JoEw.ico
<Current directory>\IQwW.exe
<Current directory>\dIcc.exe
<Current directory>\noAm.ico
%TEMP%\LOUosYgY.bat
<Current directory>\Fowi.ico
<Current directory>\pEAU.exe
<Current directory>\qEwo.ico
%TEMP%\MgcwcwgA.bat
<Current directory>\pUgo.ico
%TEMP%\QyUAwgEY.bat
<Current directory>\AMkU.exe
<Current directory>\vQso.exe
<Current directory>\XUYE.ico

Moves the following files:

from C:\RCX11.tmp to <Current directory>\XowE.exe
from C:\RCX12.tmp to <Current directory>\wgse.exe
from C:\RCX13.tmp to <Current directory>\YQEy.exe
from C:\RCXE.tmp to <Current directory>\PIES.exe
from C:\RCXF.tmp to <Current directory>\mUcI.exe
from C:\RCX10.tmp to <Current directory>\fYIS.exe
from C:\RCX17.tmp to <Current directory>\acQq.exe
from C:\RCX18.tmp to <Current directory>\jgMe.exe
from C:\RCX19.tmp to <Current directory>\esoI.exe
from C:\RCX14.tmp to <Current directory>\QwYK.exe
from C:\RCX15.tmp to <Current directory>\EQgm.exe
from C:\RCX16.tmp to <Current directory>\DwAO.exe
from C:\RCXD.tmp to <Current directory>\dIcc.exe
from C:\RCX4.tmp to <Current directory>\kUUM.exe
from C:\RCX5.tmp to <Current directory>\sMUY.exe
from C:\RCX6.tmp to <Current directory>\SQgA.exe
from C:\RCX1.tmp to <Current directory>\AAYq.exe
from C:\RCX2.tmp to <Current directory>\VEwq.exe
from C:\RCX3.tmp to <Current directory>\noMW.exe
from C:\RCXA.tmp to <Current directory>\AMkU.exe
from C:\RCXB.tmp to <Current directory>\IQwW.exe
from C:\RCXC.tmp to <Current directory>\NEYW.exe
from C:\RCX7.tmp to <Current directory>\lMQm.exe
from C:\RCX8.tmp to <Current directory>\pEAU.exe
from C:\RCX9.tmp to <Current directory>\vQso.exe

Deletes itself.

Network activity:

Connects to:

'19#.#86.45.170':9999
'74.##5.232.51':80
'20#.#7.164.69':9999
'20#.#19.204.12':9999

TCP:

HTTP GET requests:

74.##5.232.51/

UDP:

DNS ASK google.com

Miscellaneous:

Searches for the following windows:

ClassName: 'Indicator' WindowName: ''

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