Trojan.DownLoader12.5968

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%\eyMcEkkY.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\rqAIogYc.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\zIAEQcck.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\NUQoEcUE.bat" "<Full path to virus>""
'<SYSTEM32>\wbem\wmiadap.exe' /R /T
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\dGgQYcAU.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\KSIswkUc.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%\XYsMgwIM.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\NGggcwsE.bat" "<Full path to virus>""
'<SYSTEM32>\cscript.exe' %TEMP%\file.vbs
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\CMsIsEwE.bat" "<Full path to virus>""

Modifies file system :

Creates the following files:

<Current directory>\mkAA.ico
<Current directory>\OkIW.exe
C:\RCX11.tmp
C:\RCX10.tmp
C:\RCXF.tmp
<Current directory>\nGwo.ico
<Current directory>\tUEy.exe
<Current directory>\nskM.exe
C:\RCX13.tmp
<Current directory>\BuIQ.ico
<Current directory>\GggM.ico
<Current directory>\cmss.ico
<Current directory>\qcUy.exe
C:\RCX12.tmp
<Current directory>\TAEw.exe
C:\RCXC.tmp
<Current directory>\BUgM.ico
<Current directory>\Aesc.ico
<Current directory>\GQYI.ico
<Current directory>\QQIM.exe
C:\RCXB.tmp
C:\RCXE.tmp
<Current directory>\HioE.ico
<Current directory>\HUga.exe
<Current directory>\TMcK.exe
<Current directory>\YkMc.exe
C:\RCXD.tmp
<Current directory>\ICQg.ico
<Current directory>\VIcc.exe
C:\RCX1A.tmp
<Current directory>\vYIk.ico
<Current directory>\lIEg.ico
<Current directory>\gIwA.ico
<Current directory>\CEkg.exe
C:\RCX19.tmp
<Current directory>\XMoq.exe
<Current directory>\QmgY.ico
<Current directory>\MIcm.exe
<Current directory>\LIME.ico
<Current directory>\RoIa.exe
C:\RCX1B.tmp
%TEMP%\jeIgAIIg.bat
C:\RCX15.tmp
<Current directory>\FoQs.ico
<Current directory>\rMga.exe
<Current directory>\nssU.exe
<Current directory>\XkUE.exe
C:\RCX14.tmp
<Current directory>\xIgc.ico
<Current directory>\Nwss.ico
<Current directory>\pgYI.exe
C:\RCX18.tmp
C:\RCX17.tmp
C:\RCX16.tmp
<Current directory>\OIkw.ico
<Current directory>\gUEy.exe
%TEMP%\CeUMoMYg.bat
C:\RCX3.tmp
%TEMP%\NGggcwsE.bat
<Current directory>\PQIi.exe
%TEMP%\file.vbs
%TEMP%\CMsIsEwE.bat
<Current directory>\OWkM.ico
<Current directory>\husA.ico
<Current directory>\yAES.exe
%TEMP%\zIAEQcck.bat
%TEMP%\HMMgEssU.bat
<Current directory>\FooQ.ico
<Current directory>\oAkw.exe
C:\RCX4.tmp
%ALLUSERSPROFILE%\casg.txt
%TEMP%\SmEEwMsA.bat
<Current directory>\UScU.ico
<Current directory>\<Virus name>
%ALLUSERSPROFILE%\lwQggIEM\nwAEcgMA.exe
%TEMP%\gGEUAIcI.bat
<Current directory>\VQsM.ico
<Current directory>\hsIg.exe
C:\RCX2.tmp
%TEMP%\LWkUokcA.bat
<Current directory>\TYQq.exe
C:\RCX1.tmp
%TEMP%\XYsMgwIM.bat
%TEMP%\KSIswkUc.bat
<Current directory>\RKgA.ico
%TEMP%\zGMscIwg.bat
%TEMP%\twosYgMM.bat
<Current directory>\FuMk.ico
<Current directory>\PMIO.exe
C:\RCX8.tmp
<Current directory>\gyoE.ico
<Current directory>\IcAc.exe
C:\RCXA.tmp
%TEMP%\dGgQYcAU.bat
<Current directory>\TwEG.exe
%TEMP%\eWAEIwcw.bat
C:\RCX9.tmp
C:\RCX6.tmp
%TEMP%\CEIMsYUE.bat
%TEMP%\eyMcEkkY.bat
<Current directory>\fUgK.exe
C:\RCX5.tmp
%TEMP%\kOAgQEAk.bat
<Current directory>\FgsE.ico
C:\RCX7.tmp
%TEMP%\NUQoEcUE.bat
%TEMP%\OIkEUYos.bat
%TEMP%\eYcwYoYo.bat
<Current directory>\SQoE.ico
%TEMP%\rqAIogYc.bat
<Current directory>\EIUW.exe

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>\mkAA.ico
<Current directory>\qcUy.exe
<Current directory>\nGwo.ico
<Current directory>\OkIW.exe
<Current directory>\GggM.ico
<Current directory>\XkUE.exe
<Current directory>\cmss.ico
<Current directory>\nskM.exe
<Current directory>\BUgM.ico
<Current directory>\TMcK.exe
<Current directory>\Aesc.ico
<Current directory>\YkMc.exe
<Current directory>\HioE.ico
<Current directory>\tUEy.exe
<Current directory>\ICQg.ico
<Current directory>\HUga.exe
<Current directory>\BuIQ.ico
<Current directory>\VIcc.exe
<SYSTEM32>\shell32.dll
<Current directory>\CEkg.exe
<Current directory>\gIwA.ico
<Current directory>\vYIk.ico
<Current directory>\LIME.ico
<Current directory>\lIEg.ico
<Current directory>\RoIa.exe
<Current directory>\rMga.exe
<Current directory>\FoQs.ico
<Current directory>\nssU.exe
<Current directory>\xIgc.ico
<Current directory>\pgYI.exe
<Current directory>\Nwss.ico
<Current directory>\gUEy.exe
<Current directory>\OIkw.ico
<Current directory>\TAEw.exe
<Current directory>\oAkw.exe
%TEMP%\HMMgEssU.bat
<Current directory>\PQIi.exe
<Current directory>\OWkM.ico
<Current directory>\husA.ico
%TEMP%\kOAgQEAk.bat
<Current directory>\FooQ.ico
<Current directory>\yAES.exe
<Current directory>\TYQq.exe
<Current directory>\UScU.ico
%TEMP%\gGEUAIcI.bat
%TEMP%\SmEEwMsA.bat
<Current directory>\VQsM.ico
%TEMP%\CeUMoMYg.bat
%TEMP%\LWkUokcA.bat
<Current directory>\hsIg.exe
%TEMP%\CEIMsYUE.bat
<Current directory>\TwEG.exe
<Current directory>\RKgA.ico
<Current directory>\FuMk.ico
%TEMP%\zGMscIwg.bat
<Current directory>\QQIM.exe
<Current directory>\GQYI.ico
<Current directory>\IcAc.exe
<Current directory>\gyoE.ico
%TEMP%\eYcwYoYo.bat
%TEMP%\OIkEUYos.bat
<Current directory>\fUgK.exe
<Current directory>\FgsE.ico
%TEMP%\twosYgMM.bat
<Current directory>\PMIO.exe
<Current directory>\EIUW.exe
<Current directory>\SQoE.ico

Moves the following files:

from C:\RCX12.tmp to <Current directory>\qcUy.exe
from C:\RCX13.tmp to <Current directory>\nskM.exe
from C:\RCX14.tmp to <Current directory>\XkUE.exe
from C:\RCXF.tmp to <Current directory>\HUga.exe
from C:\RCX10.tmp to <Current directory>\tUEy.exe
from C:\RCX11.tmp to <Current directory>\OkIW.exe
from C:\RCX15.tmp to <Current directory>\nssU.exe
from C:\RCX19.tmp to <Current directory>\CEkg.exe
from C:\RCX1A.tmp to <Current directory>\VIcc.exe
from C:\RCX1B.tmp to <Current directory>\RoIa.exe
from C:\RCX16.tmp to <Current directory>\rMga.exe
from C:\RCX17.tmp to <Current directory>\gUEy.exe
from C:\RCX18.tmp to <Current directory>\pgYI.exe
from C:\RCXE.tmp to <Current directory>\TMcK.exe
from C:\RCX4.tmp to <Current directory>\oAkw.exe
from C:\RCX5.tmp to <Current directory>\yAES.exe
from C:\RCX6.tmp to <Current directory>\fUgK.exe
from C:\RCX1.tmp to <Current directory>\TYQq.exe
from C:\RCX2.tmp to <Current directory>\hsIg.exe
from C:\RCX3.tmp to <Current directory>\PQIi.exe
from C:\RCX7.tmp to <Current directory>\EIUW.exe
from C:\RCXB.tmp to <Current directory>\QQIM.exe
from C:\RCXC.tmp to <Current directory>\TAEw.exe
from C:\RCXD.tmp to <Current directory>\YkMc.exe
from C:\RCX8.tmp to <Current directory>\PMIO.exe
from C:\RCX9.tmp to <Current directory>\TwEG.exe
from C:\RCXA.tmp to <Current directory>\IcAc.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: 'jaQEcQMQ.exe'
ClassName: 'Shell_TrayWnd' WindowName: ''
ClassName: '' WindowName: 'Microsoft Windows'
ClassName: 'Indicator' WindowName: ''
ClassName: '' WindowName: 'AcIcUcAM.exe'

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