Trojan.DownLoader11.50427

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'

Creates the following services:

[<HKLM>\SYSTEM\ControlSet001\Services\FkYQcQph] 'Start' = '00000002'

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

Executes the following:

'<SYSTEM32>\cmd.exe' /c ""%TEMP%\FgoUkkAc.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\bsIsMIsI.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\dQIogEYA.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\WIAUcAEI.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\kIEwQgIs.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\JMQQAYwI.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\lIkAUUUs.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\cYIosooU.bat" "<Full path to virus>""
'<SYSTEM32>\reg.exe' /c ""%TEMP%\FecQAAEA.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\aassckEY.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\NMgswgIc.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\RwgIoUwM.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\wkcgIwMc.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\neUEoQEU.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\tOwMswkU.bat" "<Full path to virus>""
'<SYSTEM32>\cscript.exe' %TEMP%\file.vbs
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\wIUQYkQM.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>\reg.exe' add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /d 0 /t REG_DWORD /f
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\saEogsEw.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\jqokAEcs.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\pMksIQso.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\qqMwgAks.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\XikgoUsQ.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\TMEwMQIg.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\kegEYwEI.bat" "<Full path to virus>""

Injects code into

the following system processes:

<SYSTEM32>\reg.exe

Modifies file system :

Creates the following files:

C:\RCXB.tmp
%TEMP%\lIkAUUUs.bat
%TEMP%\DQIUEgsw.bat
%TEMP%\zQkEIoww.bat
<Current directory>\yoAY.ico
<Current directory>\oAQk.exe
%TEMP%\NMgswgIc.bat
%TEMP%\wkcgIwMc.bat
%TEMP%\lgsYkwwA.bat
<Current directory>\xigs.ico
%TEMP%\dGcswwgs.bat
%TEMP%\RwgIoUwM.bat
%TEMP%\RCQMIoEc.bat
%TEMP%\dQIogEYA.bat
<Current directory>\EsIO.exe
%TEMP%\JMQQAYwI.bat
C:\RCXA.tmp
%TEMP%\kIEwQgIs.bat
%TEMP%\bmMAcMgQ.bat
<Current directory>\ecgk.ico
%TEMP%\QmYMcMAI.bat
%TEMP%\FgoUkkAc.bat
%TEMP%\bsIsMIsI.bat
%TEMP%\peAIYIQw.bat
%TEMP%\BwEwYEgg.bat
%TEMP%\zkQokgMU.bat
%TEMP%\PUkwoAoc.bat
<Current directory>\cYUw.exe
C:\RCX10.tmp
<Current directory>\Egsk.ico
<Current directory>\qIQg.exe
C:\RCXF.tmp
<Current directory>\BYwA.ico
<Current directory>\JkgC.exe
C:\RCX11.tmp
<Current directory>\LiIA.ico
<Current directory>\ecYK.exe
C:\RCX13.tmp
<Current directory>\UYYQ.ico
<Current directory>\jMsg.exe
C:\RCX12.tmp
<Current directory>\DEAa.exe
%TEMP%\FecQAAEA.bat
%TEMP%\HMEcMsgc.bat
%TEMP%\aassckEY.bat
%TEMP%\cYIosooU.bat
C:\RCXC.tmp
%TEMP%\vEoEYIMg.bat
<Current directory>\Oosk.ico
<Current directory>\bAoi.exe
C:\RCXE.tmp
<Current directory>\swAc.ico
<Current directory>\QYwK.exe
C:\RCXD.tmp
<Current directory>\hMEQ.ico
C:\RCX2.tmp
%TEMP%\XikgoUsQ.bat
%TEMP%\NuwEUwkg.bat
%ALLUSERSPROFILE%\casg.txt
<Current directory>\ROMQ.ico
<Current directory>\qUEI.exe
%TEMP%\TMEwMQIg.bat
%TEMP%\kegEYwEI.bat
C:\RCX3.tmp
%TEMP%\VIoAgskc.bat
%TEMP%\siYIsMIw.bat
<Current directory>\JWwo.ico
<Current directory>\Yoko.exe
%TEMP%\IQoEwAIE.bat
<Current directory>\<Virus name>
%TEMP%\tOwMswkU.bat
%TEMP%\file.vbs
%ALLUSERSPROFILE%\lwQggIEM\nwAEcgMA.exe
%TEMP%\usYcAYMQ.bat
%TEMP%\aAQoUUgI.bat
%TEMP%\wIUQYkQM.bat
%TEMP%\aowwUoMk.bat
%TEMP%\saEogsEw.bat
<Current directory>\tycM.ico
<Current directory>\FoQY.exe
C:\RCX1.tmp
%TEMP%\jqokAEcs.bat
<Current directory>\Dgka.exe
%TEMP%\LeQYMwoE.bat
C:\RCX8.tmp
<Current directory>\rUcK.exe
C:\RCX7.tmp
<Current directory>\gOAw.ico
%TEMP%\neUEoQEU.bat
%TEMP%\WIAUcAEI.bat
C:\RCX9.tmp
%TEMP%\GsIUwwUk.bat
%TEMP%\EegAYAEo.bat
<Current directory>\aakg.ico
<Current directory>\KkgY.exe
<Current directory>\ACsI.ico
C:\RCX4.tmp
%TEMP%\pMksIQso.bat
<Current directory>\fcIE.ico
%TEMP%\cwkUYEsw.bat
<Current directory>\jYsM.ico
<Current directory>\SkMm.exe
<Current directory>\ggwE.exe
<Current directory>\xswm.exe
C:\RCX6.tmp
%TEMP%\qqMwgAks.bat
C:\RCX5.tmp
%TEMP%\SeEwocUI.bat
<Current directory>\pWAA.ico

Sets the 'hidden' attribute to the following files:

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

Deletes the following files:

<Current directory>\oAQk.exe
%TEMP%\RCQMIoEc.bat
%TEMP%\dGcswwgs.bat
<Current directory>\yoAY.ico
%TEMP%\HMEcMsgc.bat
%TEMP%\vEoEYIMg.bat
%TEMP%\lgsYkwwA.bat
%TEMP%\DQIUEgsw.bat
%TEMP%\PUkwoAoc.bat
%TEMP%\zkQokgMU.bat
%TEMP%\QmYMcMAI.bat
%TEMP%\peAIYIQw.bat
%TEMP%\zQkEIoww.bat
<Current directory>\ecgk.ico
<Current directory>\EsIO.exe
<Current directory>\BYwA.ico
<Current directory>\JkgC.exe
<Current directory>\swAc.ico
<Current directory>\qIQg.exe
<Current directory>\UYYQ.ico
<Current directory>\jMsg.exe
<Current directory>\Egsk.ico
<Current directory>\DEAa.exe
%TEMP%\FecQAAEA.bat
<Current directory>\xigs.ico
<Current directory>\cYUw.exe
<Current directory>\QYwK.exe
<Current directory>\hMEQ.ico
<Current directory>\bAoi.exe
<Current directory>\Oosk.ico
%TEMP%\bmMAcMgQ.bat
%TEMP%\VIoAgskc.bat
<Current directory>\ROMQ.ico
<Current directory>\qUEI.exe
<Current directory>\Yoko.exe
<Current directory>\SkMm.exe
%TEMP%\cwkUYEsw.bat
<Current directory>\JWwo.ico
%TEMP%\siYIsMIw.bat
%TEMP%\aowwUoMk.bat
%TEMP%\aAQoUUgI.bat
%TEMP%\usYcAYMQ.bat
<Current directory>\FoQY.exe
%TEMP%\NuwEUwkg.bat
%TEMP%\IQoEwAIE.bat
<Current directory>\tycM.ico
<Current directory>\gOAw.ico
<Current directory>\Dgka.exe
%TEMP%\LeQYMwoE.bat
%TEMP%\EegAYAEo.bat
<Current directory>\aakg.ico
<Current directory>\KkgY.exe
%TEMP%\GsIUwwUk.bat
<Current directory>\ACsI.ico
%TEMP%\SeEwocUI.bat
<Current directory>\ggwE.exe
<Current directory>\jYsM.ico
<Current directory>\fcIE.ico
<Current directory>\rUcK.exe
<Current directory>\pWAA.ico
<Current directory>\xswm.exe

Moves the following files:

from C:\RCXC.tmp to <Current directory>\cYUw.exe
from C:\RCXD.tmp to <Current directory>\QYwK.exe
from C:\RCXA.tmp to <Current directory>\EsIO.exe
from C:\RCXB.tmp to <Current directory>\oAQk.exe
from C:\RCXE.tmp to <Current directory>\bAoi.exe
from C:\RCX11.tmp to <Current directory>\qIQg.exe
from C:\RCX12.tmp to <Current directory>\jMsg.exe
from C:\RCXF.tmp to <Current directory>\DEAa.exe
from C:\RCX10.tmp to <Current directory>\JkgC.exe
from C:\RCX3.tmp to <Current directory>\Yoko.exe
from C:\RCX4.tmp to <Current directory>\SkMm.exe
from C:\RCX1.tmp to <Current directory>\FoQY.exe
from C:\RCX2.tmp to <Current directory>\qUEI.exe
from C:\RCX5.tmp to <Current directory>\ggwE.exe
from C:\RCX8.tmp to <Current directory>\Dgka.exe
from C:\RCX9.tmp to <Current directory>\KkgY.exe
from C:\RCX6.tmp to <Current directory>\xswm.exe
from C:\RCX7.tmp to <Current directory>\rUcK.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: 'Shell_TrayWnd' WindowName: ''
ClassName: 'Indicator' WindowName: ''

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