Trojan.DownLoader12.5947

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<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%\AckcMgAI.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\RKUkIgEE.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\zkQAUAIk.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\aQwYgYUI.bat" "<Full path to virus>""
'<SYSTEM32>\wbem\wmiadap.exe' /R /T
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\bkEcgoMU.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\jUcUsMgg.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\JqgUgEUs.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%\xiMskUQg.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\vwIwEwks.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\cGcEUIgc.bat" "<Full path to virus>""
'<SYSTEM32>\cscript.exe' %TEMP%\file.vbs

Modifies file system :

Creates the following files:

C:\RCX13.tmp
<Current directory>\KowQ.ico
<Current directory>\JIom.exe
<Current directory>\GQse.exe
<Current directory>\UEEy.exe
C:\RCX12.tmp
<Current directory>\dwAA.ico
C:\RCX14.tmp
<Current directory>\zMAE.exe
C:\RCX16.tmp
<Current directory>\FGEI.ico
<Current directory>\oEUw.ico
<Current directory>\VScw.ico
<Current directory>\xwYC.exe
C:\RCX15.tmp
C:\RCXE.tmp
<Current directory>\DaIg.ico
<Current directory>\iwQe.exe
<Current directory>\xgEa.exe
<Current directory>\AYce.exe
C:\RCXD.tmp
<Current directory>\zagU.ico
C:\RCXF.tmp
<Current directory>\xoca.exe
C:\RCX11.tmp
<Current directory>\ESwk.ico
<Current directory>\kUQg.ico
<Current directory>\TmAc.ico
<Current directory>\FoMO.exe
C:\RCX10.tmp
<Current directory>\sQYw.exe
<Current directory>\egYE.ico
<Current directory>\FgEg.exe
C:\RCX1E.tmp
C:\RCX1D.tmp
C:\RCX1C.tmp
<Current directory>\ceUo.ico
<Current directory>\TYAK.exe
<Current directory>\XGII.ico
<Current directory>\OCss.ico
<Current directory>\FYYM.exe
%TEMP%\bkEcgoMU.bat
<Current directory>\PQEc.exe
<Current directory>\DssC.exe
C:\RCX1F.tmp
<Current directory>\DgEI.ico
<Current directory>\XkIQ.ico
<Current directory>\rUUo.exe
C:\RCX19.tmp
C:\RCX18.tmp
C:\RCX17.tmp
<Current directory>\LmUs.ico
<Current directory>\WIgY.exe
<Current directory>\jUAA.ico
C:\RCX1B.tmp
<Current directory>\PeEI.ico
<Current directory>\eUka.exe
<Current directory>\rEEW.exe
<Current directory>\vsEC.exe
C:\RCX1A.tmp
<Current directory>\ZkIU.ico
%TEMP%\zkQAUAIk.bat
%TEMP%\OSAYUQUs.bat
%TEMP%\RKUkIgEE.bat
%TEMP%\DUUEIgoU.bat
%TEMP%\vwIwEwks.bat
%TEMP%\wUQosgAw.bat
%TEMP%\JqgUgEUs.bat
%TEMP%\tmkcswII.bat
C:\RCX2.tmp
%TEMP%\BeEwggwI.bat
%TEMP%\jUcUsMgg.bat
<Current directory>\AwQA.exe
%TEMP%\AckcMgAI.bat
%TEMP%\VgsMgosA.bat
%TEMP%\aQwYgYUI.bat
%TEMP%\ROwYIkUk.bat
%ALLUSERSPROFILE%\casg.txt
%TEMP%\xiMskUQg.bat
<Current directory>\<Virus name>
%ALLUSERSPROFILE%\lwQggIEM\nwAEcgMA.exe
%TEMP%\eacIAIEM.bat
<Current directory>\koks.ico
%TEMP%\cGcEUIgc.bat
<Current directory>\laoE.ico
%TEMP%\BiowYwwg.bat
C:\RCX1.tmp
%TEMP%\MGQQUAMw.bat
%TEMP%\file.vbs
<Current directory>\zcEg.exe
<Current directory>\ekMQ.ico
C:\RCX9.tmp
<Current directory>\JeIY.ico
<Current directory>\ggwo.exe
<Current directory>\xEwg.exe
<Current directory>\mAMQ.exe
C:\RCX8.tmp
<Current directory>\lMgY.ico
C:\RCXA.tmp
<Current directory>\kQAi.exe
C:\RCXC.tmp
<Current directory>\oqkQ.ico
<Current directory>\JOUM.ico
<Current directory>\zCEA.ico
<Current directory>\Igwc.exe
C:\RCXB.tmp
C:\RCX4.tmp
<Current directory>\UUAQ.ico
<Current directory>\fQEo.exe
<Current directory>\DwQY.exe
<Current directory>\MQUO.exe
C:\RCX3.tmp
<Current directory>\dcAk.ico
C:\RCX5.tmp
<Current directory>\EEcO.exe
C:\RCX7.tmp
<Current directory>\BsEk.ico
<Current directory>\Cusc.ico
<Current directory>\nAoc.ico
<Current directory>\OoME.exe
C:\RCX6.tmp

Sets the 'hidden' attribute to the following files:

%ALLUSERSPROFILE%\lwQggIEM\nwAEcgMA.exe
%ALLUSERSPROFILE%\vesswIQA\AcIcUcAM.exe
%HOMEPATH%\NIMMEwsg\jaQEcQMQ.exe

Deletes the following files:

<Current directory>\JIom.exe
<Current directory>\KowQ.ico
<Current directory>\GQse.exe
<Current directory>\dwAA.ico
<Current directory>\xwYC.exe
<Current directory>\oEUw.ico
<Current directory>\sQYw.exe
<Current directory>\VScw.ico
<Current directory>\zMAE.exe
<Current directory>\DaIg.ico
<Current directory>\FoMO.exe
<Current directory>\zagU.ico
<Current directory>\iwQe.exe
<Current directory>\TmAc.ico
<Current directory>\UEEy.exe
<Current directory>\ESwk.ico
<Current directory>\xoca.exe
<Current directory>\kUQg.ico
<Current directory>\TYAK.exe
<Current directory>\ceUo.ico
<Current directory>\eUka.exe
<Current directory>\PeEI.ico
<Current directory>\FgEg.exe
<Current directory>\XGII.ico
<Current directory>\DgEI.ico
<Current directory>\egYE.ico
<Current directory>\DssC.exe
<Current directory>\LmUs.ico
<Current directory>\rUUo.exe
<Current directory>\FGEI.ico
<Current directory>\WIgY.exe
<Current directory>\XkIQ.ico
<Current directory>\rEEW.exe
<Current directory>\ZkIU.ico
<Current directory>\vsEC.exe
<Current directory>\jUAA.ico
<Current directory>\xgEa.exe
%TEMP%\BeEwggwI.bat
<Current directory>\AwQA.exe
%TEMP%\tmkcswII.bat
%TEMP%\VgsMgosA.bat
<Current directory>\laoE.ico
<Current directory>\DwQY.exe
<Current directory>\dcAk.ico
<Current directory>\MQUO.exe
<Current directory>\ekMQ.ico
%TEMP%\MGQQUAMw.bat
<Current directory>\zcEg.exe
%TEMP%\eacIAIEM.bat
%TEMP%\ROwYIkUk.bat
<Current directory>\koks.ico
%TEMP%\DUUEIgoU.bat
%TEMP%\OSAYUQUs.bat
%TEMP%\BiowYwwg.bat
%TEMP%\wUQosgAw.bat
<Current directory>\JeIY.ico
<Current directory>\Igwc.exe
<Current directory>\lMgY.ico
<Current directory>\ggwo.exe
<Current directory>\zCEA.ico
<Current directory>\AYce.exe
<Current directory>\oqkQ.ico
<Current directory>\kQAi.exe
<Current directory>\JOUM.ico
<Current directory>\OoME.exe
<Current directory>\nAoc.ico
<Current directory>\fQEo.exe
<Current directory>\UUAQ.ico
<Current directory>\EEcO.exe
<Current directory>\BsEk.ico
<Current directory>\xEwg.exe
<Current directory>\Cusc.ico
<Current directory>\mAMQ.exe

Moves the following files:

from C:\RCX15.tmp to <Current directory>\xwYC.exe
from C:\RCX16.tmp to <Current directory>\zMAE.exe
from C:\RCX17.tmp to <Current directory>\sQYw.exe
from C:\RCX14.tmp to <Current directory>\JIom.exe
from C:\RCX11.tmp to <Current directory>\xoca.exe
from C:\RCX12.tmp to <Current directory>\UEEy.exe
from C:\RCX13.tmp to <Current directory>\GQse.exe
from C:\RCX18.tmp to <Current directory>\WIgY.exe
from C:\RCX1D.tmp to <Current directory>\TYAK.exe
from C:\RCX1E.tmp to <Current directory>\FgEg.exe
from C:\RCX1F.tmp to <Current directory>\DssC.exe
from C:\RCX1C.tmp to <Current directory>\eUka.exe
from C:\RCX19.tmp to <Current directory>\rUUo.exe
from C:\RCX1A.tmp to <Current directory>\vsEC.exe
from C:\RCX1B.tmp to <Current directory>\rEEW.exe
from C:\RCX10.tmp to <Current directory>\FoMO.exe
from C:\RCX5.tmp to <Current directory>\fQEo.exe
from C:\RCX6.tmp to <Current directory>\OoME.exe
from C:\RCX7.tmp to <Current directory>\EEcO.exe
from C:\RCX4.tmp to <Current directory>\DwQY.exe
from C:\RCX1.tmp to <Current directory>\zcEg.exe
from C:\RCX2.tmp to <Current directory>\AwQA.exe
from C:\RCX3.tmp to <Current directory>\MQUO.exe
from C:\RCX8.tmp to <Current directory>\mAMQ.exe
from C:\RCXD.tmp to <Current directory>\AYce.exe
from C:\RCXE.tmp to <Current directory>\xgEa.exe
from C:\RCXF.tmp to <Current directory>\iwQe.exe
from C:\RCXC.tmp to <Current directory>\kQAi.exe
from C:\RCX9.tmp to <Current directory>\xEwg.exe
from C:\RCXA.tmp to <Current directory>\ggwo.exe
from C:\RCXB.tmp to <Current directory>\Igwc.exe

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

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