Trojan.DownLoader12.32964

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,%ALLUSERSPROFILE%\vesswIQA\AcIcUcAM.exe,'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'AcIcUcAM.exe' = '%ALLUSERSPROFILE%\vesswIQA\AcIcUcAM.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'jaQEcQMQ.exe' = '%HOMEPATH%\NIMMEwsg\jaQEcQMQ.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%\vesswIQA\AcIcUcAM.exe'
'%HOMEPATH%\NIMMEwsg\jaQEcQMQ.exe'

Executes the following:

'<SYSTEM32>\cmd.exe' /c ""%TEMP%\iooYQUAw.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\rgkksIUE.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\yKcoYAkk.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\EWIkEoUc.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\DyQUMQsw.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\TMUQYIcg.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\noYEQcAU.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>\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v Hidden /t REG_DWORD /d 2
'<SYSTEM32>\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v HideFileExt /t REG_DWORD /d 1
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\mqYwskwM.bat" "<Full path to virus>""
'<SYSTEM32>\cscript.exe' %TEMP%\file.vbs
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\cUYsccUc.bat" "<Full path to virus>""

Modifies file system :

Creates the following files:

C:\RCX10.tmp
<Current directory>\guEM.ico
<Current directory>\WUQS.exe
C:\RCXF.tmp
<Current directory>\PmIQ.ico
<Current directory>\sYce.exe
C:\RCX11.tmp
<Current directory>\gWUY.ico
<Current directory>\AoEw.exe
C:\RCX13.tmp
<Current directory>\LwMo.ico
<Current directory>\Pscc.exe
C:\RCX12.tmp
<Current directory>\qowE.ico
<Current directory>\CIkE.exe
C:\RCXD.tmp
<Current directory>\fOYI.ico
<Current directory>\HAEY.exe
C:\RCXC.tmp
%TEMP%\eCccsQQc.bat
%TEMP%\TMUQYIcg.bat
<Current directory>\PMwc.ico
<Current directory>\JsIO.exe
<Current directory>\BOIQ.ico
<Current directory>\BQAW.exe
C:\RCXE.tmp
<Current directory>\gQEk.ico
<Current directory>\LMQU.exe
C:\RCX18.tmp
<Current directory>\SQMq.exe
C:\RCX17.tmp
%TEMP%\EWIkEoUc.bat
<Current directory>\FSYs.ico
%TEMP%\gWQcsIsY.bat
<Current directory>\VKQA.ico
<Current directory>\hAYC.exe
<Current directory>\VAAQ.exe
C:\RCX19.tmp
%TEMP%\BqgcIEcY.bat
C:\RCX14.tmp
%TEMP%\DyQUMQsw.bat
<Current directory>\PwkM.ico
%TEMP%\sIwEkoQA.bat
<Current directory>\vCck.ico
<Current directory>\lcEW.exe
<Current directory>\NkYE.exe
C:\RCX16.tmp
%TEMP%\lggoYswE.bat
<Current directory>\oyIc.ico
C:\RCX15.tmp
<Current directory>\NwEs.ico
<Current directory>\ncEk.exe
%TEMP%\noYEQcAU.bat
<Current directory>\FoIM.exe
C:\RCX2.tmp
%TEMP%\NgUEkkYU.bat
%TEMP%\mqYwskwM.bat
%TEMP%\JMQQcUkY.bat
<Current directory>\AcIw.ico
<Current directory>\qQMw.ico
<Current directory>\OMAg.exe
C:\RCX4.tmp
<Current directory>\wAYa.exe
C:\RCX3.tmp
%TEMP%\BogwUgUI.bat
%ALLUSERSPROFILE%\casg.txt
<Current directory>\rOwU.ico
C:\Documents and Settings\LocalService\NIMMEwsg\jaQEcQMQ
%HOMEPATH%\NIMMEwsg\jaQEcQMQ
%ALLUSERSPROFILE%\vesswIQA\AcIcUcAM
%ALLUSERSPROFILE%\lwQggIEM\nwAEcgMA.exe
%TEMP%\pIYgAQEg.bat
%TEMP%\cUYsccUc.bat
<Current directory>\uIIo.ico
%TEMP%\file.vbs
<Current directory>\<Virus name>
<Current directory>\PogQ.exe
C:\RCX1.tmp
<Current directory>\iIYc.exe
C:\RCX9.tmp
<Current directory>\iuQM.ico
<Current directory>\Pcoa.exe
C:\RCX8.tmp
<Current directory>\FKoU.ico
<Current directory>\sUAc.exe
<Current directory>\aQkE.exe
%TEMP%\iooYQUAw.bat
C:\RCXB.tmp
C:\RCXA.tmp
%TEMP%\NOYowYEI.bat
<Current directory>\IcoM.ico
C:\RCX5.tmp
<Current directory>\CuYs.ico
<Current directory>\csAm.exe
%TEMP%\yKcoYAkk.bat
<Current directory>\yOoI.ico
<Current directory>\Qocc.exe
C:\RCX6.tmp
%TEMP%\rgkksIUE.bat
C:\RCX7.tmp
<Current directory>\DmcI.ico
%TEMP%\hMUwcksk.bat
<Current directory>\BwIg.ico
<Current directory>\pQMQ.exe

Deletes the following files:

<Current directory>\Pscc.exe
<Current directory>\guEM.ico
<Current directory>\WUQS.exe
<Current directory>\LwMo.ico
%TEMP%\sIwEkoQA.bat
<Current directory>\gWUY.ico
<Current directory>\AoEw.exe
<Current directory>\PmIQ.ico
<Current directory>\BQAW.exe
<Current directory>\qowE.ico
%TEMP%\eCccsQQc.bat
<Current directory>\BOIQ.ico
<Current directory>\sYce.exe
<Current directory>\PMwc.ico
<Current directory>\JsIO.exe
<Current directory>\gQEk.ico
<Current directory>\LMQU.exe
<Current directory>\oyIc.ico
<Current directory>\VAAQ.exe
<Current directory>\VKQA.ico
%TEMP%\BqgcIEcY.bat
<Current directory>\FSYs.ico
<Current directory>\SQMq.exe
<Current directory>\NkYE.exe
<Current directory>\vCck.ico
<Current directory>\lcEW.exe
<Current directory>\PwkM.ico
%TEMP%\lggoYswE.bat
<Current directory>\NwEs.ico
<Current directory>\ncEk.exe
<Current directory>\CIkE.exe
<Current directory>\OMAg.exe
<Current directory>\AcIw.ico
%TEMP%\BogwUgUI.bat
<Current directory>\qQMw.ico
%TEMP%\hMUwcksk.bat
<Current directory>\yOoI.ico
<Current directory>\Qocc.exe
<Current directory>\wAYa.exe
<Current directory>\rOwU.ico
<Current directory>\PogQ.exe
%TEMP%\pIYgAQEg.bat
%TEMP%\NgUEkkYU.bat
<Current directory>\uIIo.ico
<Current directory>\FoIM.exe
%TEMP%\JMQQcUkY.bat
<Current directory>\iuQM.ico
<Current directory>\sUAc.exe
%TEMP%\NOYowYEI.bat
<Current directory>\aQkE.exe
<Current directory>\fOYI.ico
<Current directory>\HAEY.exe
<Current directory>\IcoM.ico
<Current directory>\FKoU.ico
<Current directory>\pQMQ.exe
<Current directory>\CuYs.ico
<Current directory>\csAm.exe
<Current directory>\BwIg.ico
<Current directory>\iIYc.exe
<Current directory>\DmcI.ico
<Current directory>\Pcoa.exe

Moves the following files:

from C:\RCX11.tmp to <Current directory>\WUQS.exe
from C:\RCX12.tmp to <Current directory>\Pscc.exe
from C:\RCX13.tmp to <Current directory>\AoEw.exe
from C:\RCXE.tmp to <Current directory>\BQAW.exe
from C:\RCXF.tmp to <Current directory>\JsIO.exe
from C:\RCX10.tmp to <Current directory>\sYce.exe
from C:\RCX17.tmp to <Current directory>\SQMq.exe
from C:\RCX18.tmp to <Current directory>\LMQU.exe
from C:\RCX19.tmp to <Current directory>\VAAQ.exe
from C:\RCX14.tmp to <Current directory>\lcEW.exe
from C:\RCX15.tmp to <Current directory>\NkYE.exe
from C:\RCX16.tmp to <Current directory>\ncEk.exe
from C:\RCXD.tmp to <Current directory>\CIkE.exe
from C:\RCX4.tmp to <Current directory>\OMAg.exe
from C:\RCX5.tmp to <Current directory>\Qocc.exe
from C:\RCX6.tmp to <Current directory>\csAm.exe
from C:\RCX1.tmp to <Current directory>\PogQ.exe
from C:\RCX2.tmp to <Current directory>\FoIM.exe
from C:\RCX3.tmp to <Current directory>\wAYa.exe
from C:\RCXA.tmp to <Current directory>\sUAc.exe
from C:\RCXB.tmp to <Current directory>\aQkE.exe
from C:\RCXC.tmp to <Current directory>\HAEY.exe
from C:\RCX7.tmp to <Current directory>\pQMQ.exe
from C:\RCX8.tmp to <Current directory>\Pcoa.exe
from C:\RCX9.tmp to <Current directory>\iIYc.exe

Deletes itself.

Network activity:

Connects to:

'74.##5.232.51':80

TCP:

HTTP GET requests:

74.##5.232.51/

UDP:

DNS ASK google.com

Miscellaneous:

Searches for the following windows:

ClassName: '' WindowName: 'AcIcUcAM.exe'
ClassName: 'Shell_TrayWnd' WindowName: ''
ClassName: '' WindowName: 'Microsoft Windows'
ClassName: 'Indicator' WindowName: ''
ClassName: '' WindowName: 'jaQEcQMQ.exe'

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