Trojan.DownLoader12.6134

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%\YcIcskwE.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\WsUAEscg.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\RiwUQwUY.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\ZccQwkgk.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\XAMogQwU.bat" "<Full path to virus>""
'<SYSTEM32>\wbem\wmiadap.exe' /R /T
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\hAEwYwsk.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>\cscript.exe' %TEMP%\file.vbs
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\qyMccMUg.bat" "<Full path to virus>""
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\yyssUowU.bat" "<Full path to virus>""

Modifies file system :

Creates the following files:

<Current directory>\acQs.exe
C:\RCX13.tmp
<Current directory>\acIo.ico
<Current directory>\LWAk.ico
<Current directory>\DiUM.ico
<Current directory>\zcMm.exe
C:\RCX12.tmp
C:\RCX15.tmp
<Current directory>\SsQs.ico
<Current directory>\TgsK.exe
<Current directory>\bUgc.exe
<Current directory>\xgcm.exe
C:\RCX14.tmp
<Current directory>\Awkc.ico
C:\RCX11.tmp
<Current directory>\hsYE.exe
C:\RCXE.tmp
<Current directory>\nucI.ico
<Current directory>\NaEs.ico
<Current directory>\luIs.ico
<Current directory>\OUoY.exe
C:\RCXD.tmp
C:\RCX10.tmp
<Current directory>\wYMk.ico
<Current directory>\xUkO.exe
<Current directory>\vMoe.exe
<Current directory>\OUke.exe
C:\RCXF.tmp
<Current directory>\LcgU.ico
C:\RCX16.tmp
<Current directory>\gUQi.exe
C:\RCX1D.tmp
<Current directory>\DisY.ico
<Current directory>\rgoU.ico
<Current directory>\YWsM.ico
<Current directory>\kgIu.exe
C:\RCX1C.tmp
C:\RCX1F.tmp
<Current directory>\DyUg.ico
<Current directory>\Wswk.exe
<Current directory>\zYgw.exe
<Current directory>\BgEO.exe
C:\RCX1E.tmp
<Current directory>\JcUs.ico
C:\RCX1B.tmp
<Current directory>\ccIc.exe
C:\RCX18.tmp
<Current directory>\pqQk.ico
<Current directory>\XQgE.ico
<Current directory>\TaUg.ico
<Current directory>\ggEa.exe
C:\RCX17.tmp
C:\RCX1A.tmp
<Current directory>\lKIM.ico
<Current directory>\cQAm.exe
<Current directory>\aYQC.exe
<Current directory>\hUsU.exe
C:\RCX19.tmp
<Current directory>\ciIU.ico
<Current directory>\QqoE.ico
<Current directory>\lkIO.exe
C:\RCX4.tmp
%TEMP%\file.vbs
<Current directory>\dYYS.exe
C:\RCX3.tmp
%TEMP%\qyMccMUg.bat
%TEMP%\hAEwYwsk.bat
%TEMP%\kQYsoYYk.bat
<Current directory>\NsoA.ico
C:\RCX5.tmp
%TEMP%\mkYUcAEc.bat
<Current directory>\Sqsw.ico
<Current directory>\ZMEe.exe
<Current directory>\KkQY.ico
%ALLUSERSPROFILE%\casg.txt
<Current directory>\LyYY.ico
<Current directory>\MwQM.exe
<Current directory>\<Virus name>
%ALLUSERSPROFILE%\lwQggIEM\nwAEcgMA.exe
%TEMP%\JsoAYkAw.bat
C:\RCX2.tmp
%TEMP%\juQwQwIs.bat
%TEMP%\yyssUowU.bat
<Current directory>\ccMw.exe
C:\RCX1.tmp
%TEMP%\bcgEMAEU.bat
<Current directory>\WcMQ.ico
%TEMP%\RiwUQwUY.bat
%TEMP%\VuwAMgEs.bat
<Current directory>\siME.ico
<Current directory>\aIgg.exe
%TEMP%\ZccQwkgk.bat
%TEMP%\XAMogQwU.bat
<Current directory>\Bwck.exe
C:\RCX9.tmp
<Current directory>\UMEw.ico
<Current directory>\GUgs.exe
C:\RCXC.tmp
C:\RCXB.tmp
C:\RCXA.tmp
<Current directory>\GGcA.ico
<Current directory>\uYom.exe
<Current directory>\rkEs.ico
<Current directory>\LIEY.exe
C:\RCX7.tmp
%TEMP%\xGEEwskw.bat
<Current directory>\kIcY.ico
<Current directory>\IMQy.exe
C:\RCX6.tmp
%TEMP%\hewIAsoA.bat
<Current directory>\HoYQ.exe
C:\RCX8.tmp
%TEMP%\WoIAEMsY.bat
<Current directory>\PykY.ico
%TEMP%\YcIcskwE.bat
%TEMP%\WsUAEscg.bat
%TEMP%\hqEcgQsI.bat

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>\xgcm.exe
<Current directory>\acIo.ico
<Current directory>\acQs.exe
<Current directory>\LWAk.ico
<Current directory>\bUgc.exe
<Current directory>\SsQs.ico
<Current directory>\ggEa.exe
<Current directory>\Awkc.ico
<Current directory>\TgsK.exe
<Current directory>\nucI.ico
<Current directory>\vMoe.exe
<Current directory>\NaEs.ico
<Current directory>\OUke.exe
<Current directory>\LcgU.ico
<Current directory>\zcMm.exe
<Current directory>\DiUM.ico
<Current directory>\xUkO.exe
<Current directory>\wYMk.ico
<Current directory>\gUQi.exe
<Current directory>\rgoU.ico
<Current directory>\kgIu.exe
<Current directory>\YWsM.ico
<Current directory>\BgEO.exe
<Current directory>\JcUs.ico
<Current directory>\DyUg.ico
<Current directory>\DisY.ico
<Current directory>\zYgw.exe
<Current directory>\XQgE.ico
<Current directory>\hUsU.exe
<Current directory>\TaUg.ico
<Current directory>\ccIc.exe
<Current directory>\pqQk.ico
<Current directory>\cQAm.exe
<Current directory>\lKIM.ico
<Current directory>\aYQC.exe
<Current directory>\ciIU.ico
<Current directory>\hsYE.exe
<Current directory>\QqoE.ico
%TEMP%\kQYsoYYk.bat
%TEMP%\mkYUcAEc.bat
<Current directory>\lkIO.exe
<Current directory>\ZMEe.exe
%TEMP%\hewIAsoA.bat
<Current directory>\NsoA.ico
<Current directory>\Sqsw.ico
<Current directory>\IMQy.exe
<Current directory>\LyYY.ico
%TEMP%\bcgEMAEU.bat
%TEMP%\JsoAYkAw.bat
<Current directory>\MwQM.exe
<Current directory>\ccMw.exe
<Current directory>\dYYS.exe
<Current directory>\KkQY.ico
<Current directory>\WcMQ.ico
%TEMP%\juQwQwIs.bat
<Current directory>\siME.ico
<Current directory>\uYom.exe
%TEMP%\VuwAMgEs.bat
<Current directory>\aIgg.exe
<Current directory>\GGcA.ico
<Current directory>\OUoY.exe
<Current directory>\luIs.ico
<Current directory>\GUgs.exe
<Current directory>\UMEw.ico
<Current directory>\kIcY.ico
%TEMP%\hqEcgQsI.bat
%TEMP%\xGEEwskw.bat
<Current directory>\LIEY.exe
<Current directory>\HoYQ.exe
<Current directory>\Bwck.exe
<Current directory>\rkEs.ico
%TEMP%\WoIAEMsY.bat
<Current directory>\PykY.ico

Moves the following files:

from C:\RCX15.tmp to <Current directory>\bUgc.exe
from C:\RCX16.tmp to <Current directory>\TgsK.exe
from C:\RCX17.tmp to <Current directory>\ggEa.exe
from C:\RCX14.tmp to <Current directory>\xgcm.exe
from C:\RCX11.tmp to <Current directory>\xUkO.exe
from C:\RCX12.tmp to <Current directory>\zcMm.exe
from C:\RCX13.tmp to <Current directory>\acQs.exe
from C:\RCX18.tmp to <Current directory>\ccIc.exe
from C:\RCX1D.tmp to <Current directory>\gUQi.exe
from C:\RCX1E.tmp to <Current directory>\BgEO.exe
from C:\RCX1F.tmp to <Current directory>\zYgw.exe
from C:\RCX1C.tmp to <Current directory>\kgIu.exe
from C:\RCX19.tmp to <Current directory>\hUsU.exe
from C:\RCX1A.tmp to <Current directory>\aYQC.exe
from C:\RCX1B.tmp to <Current directory>\cQAm.exe
from C:\RCX10.tmp to <Current directory>\vMoe.exe
from C:\RCX5.tmp to <Current directory>\ZMEe.exe
from C:\RCX6.tmp to <Current directory>\IMQy.exe
from C:\RCX7.tmp to <Current directory>\LIEY.exe
from C:\RCX4.tmp to <Current directory>\lkIO.exe
from C:\RCX1.tmp to <Current directory>\MwQM.exe
from C:\RCX2.tmp to <Current directory>\ccMw.exe
from C:\RCX3.tmp to <Current directory>\dYYS.exe
from C:\RCX8.tmp to <Current directory>\HoYQ.exe
from C:\RCXD.tmp to <Current directory>\OUoY.exe
from C:\RCXE.tmp to <Current directory>\hsYE.exe
from C:\RCXF.tmp to <Current directory>\OUke.exe
from C:\RCXC.tmp to <Current directory>\GUgs.exe
from C:\RCX9.tmp to <Current directory>\Bwck.exe
from C:\RCXA.tmp to <Current directory>\aIgg.exe
from C:\RCXB.tmp to <Current directory>\uYom.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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