Trojan.DownLoader11.20308

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'PWRISOVM.EXE' = '%PROGRAM_FILES%\PowerISO\PWRISOVM.EXE -startup'
[<HKLM>\SOFTWARE\Classes\PowerISO\shell\open\command] '' = '%PROGRAM_FILES%\PowerISO\PowerISO.exe "%1"'

Creates the following services:

[<HKLM>\SYSTEM\ControlSet001\Services\SCDEmu] 'Start' = '00000001'

Malicious functions:

Creates and executes the following:

'%ALLUSERSPROFILE%\Application Data\Patcher.exe' /silent /nobackup /overwrite
'%PROGRAM_FILES%\PowerISO\PWRISOVM.EXE' 999
'%ALLUSERSPROFILE%\Application Data\Setup.exe' /S

Executes the following:

'<SYSTEM32>\ipconfig.exe' /renew *
'%WINDIR%\regedit.exe' /s "%TEMP%\\regpatch.reg"
'<SYSTEM32>\regsvr32.exe' /s "%PROGRAM_FILES%\PowerISO\PWRISOSH.DLL"
'<SYSTEM32>\ipconfig.exe' /release *
'<SYSTEM32>\regsvr32.exe' /s /u "%PROGRAM_FILES%\PowerISO\PWRISOSH.DLL"

Terminates or attempts to terminate

the following user processes:

chrome.exe
firefox.exe
safari.exe
iexplore.exe
opera.exe

Modifies file system :

Creates the following files:

%PROGRAM_FILES%\PowerISO\piso.exe
%PROGRAM_FILES%\PowerISO\PowerISO.exe
%PROGRAM_FILES%\PowerISO\Lang\Urdu(Pakistan).lng
%PROGRAM_FILES%\PowerISO\Lang\Romanian.lng
%PROGRAM_FILES%\PowerISO\MACDll.dll
%PROGRAM_FILES%\PowerISO\PowerISO.chm
%PROGRAM_FILES%\PowerISO\lame_enc.dll
%PROGRAM_FILES%\PowerISO\libFLAC.dll
%PROGRAM_FILES%\PowerISO\Lang\Azerbaijani.lng
%PROGRAM_FILES%\PowerISO\Lang\Malay.lng
%PROGRAM_FILES%\PowerISO\Lang\Bosnian.lng
%PROGRAM_FILES%\PowerISO\Lang\Armenian.lng
%PROGRAM_FILES%\PowerISO\Lang\Serbian(cyrl).lng
%PROGRAM_FILES%\PowerISO\Lang\kazakh.lng
%PROGRAM_FILES%\PowerISO\Lang\Indonesian.lng
%PROGRAM_FILES%\PowerISO\Lang\Slovak.lng
%PROGRAM_FILES%\PowerISO\Lang\Vietnamese.lng
%TEMP%\aut5.tmp
%ALLUSERSPROFILE%\Application Data\Patcher.exe
%ALLUSERSPROFILE%\Start Menu\Programs\PowerISO\PowerISO Virtual Drive Manager.lnk
%ALLUSERSPROFILE%\Desktop\PowerISO.lnk
%TEMP%\C5E3399ED9A072FE864748D49BA96094.dll
%TEMP%\regpatch.reg
%TEMP%\dup2patcher.dll
%TEMP%\A1D76FF97175BF79025AB7AA1DDF0A2A.dll
%ALLUSERSPROFILE%\Start Menu\Programs\PowerISO\PowerISO.lnk
%PROGRAM_FILES%\PowerISO\History.txt
%PROGRAM_FILES%\PowerISO\PWRISOSH.DLL
%PROGRAM_FILES%\PowerISO\Readme.txt
%PROGRAM_FILES%\PowerISO\License.txt
%ALLUSERSPROFILE%\Start Menu\Programs\PowerISO\Uninstall PowerISO.lnk
%ALLUSERSPROFILE%\Start Menu\Programs\PowerISO\PowerISO Help.lnk
%PROGRAM_FILES%\PowerISO\PWRISOVM.EXE
%PROGRAM_FILES%\PowerISO\uninstall.exe
%PROGRAM_FILES%\PowerISO\Lang\Belarusian.lng
%PROGRAM_FILES%\PowerISO\Lang\french.lng
%PROGRAM_FILES%\PowerISO\Lang\Arabic.lng
%PROGRAM_FILES%\PowerISO\Lang\italian.lng
%PROGRAM_FILES%\PowerISO\Lang\Polish.lng
%PROGRAM_FILES%\PowerISO\Lang\czech.lng
%PROGRAM_FILES%\PowerISO\Lang\Lithuanian.lng
%PROGRAM_FILES%\PowerISO\Lang\Bulgarian.lng
%PROGRAM_FILES%\PowerISO\Lang\Korean.lng
%PROGRAM_FILES%\PowerISO\Lang\TradChinese.lng
%TEMP%\nsx3.tmp
%TEMP%\nsh4.tmp\InstOpt.dll
%TEMP%\aut1.tmp
%ALLUSERSPROFILE%\Application Data\Setup.exe
<DRIVERS>\scdemu.sys
%PROGRAM_FILES%\PowerISO\Lang\SimpChinese.lng
%TEMP%\sp-downloader.exe
%TEMP%\nsh4.tmp\System.dll
%PROGRAM_FILES%\PowerISO\Lang\Dutch.lng
%PROGRAM_FILES%\PowerISO\Lang\Thai.lng
%PROGRAM_FILES%\PowerISO\Lang\Norsk.lng
%PROGRAM_FILES%\PowerISO\Lang\Portuguese(Brazil).lng
%PROGRAM_FILES%\PowerISO\Lang\croatian.lng
%PROGRAM_FILES%\PowerISO\Lang\Farsi.lng
%PROGRAM_FILES%\PowerISO\Lang\danish.lng
%PROGRAM_FILES%\PowerISO\Lang\Ukrainian.lng
%PROGRAM_FILES%\PowerISO\Lang\Swedish.lng
%PROGRAM_FILES%\PowerISO\Lang\Turkish.lng
%PROGRAM_FILES%\PowerISO\Lang\Hungarian.lng
%PROGRAM_FILES%\PowerISO\Lang\Greek.lng
%PROGRAM_FILES%\PowerISO\Lang\Spanish.lng
%PROGRAM_FILES%\PowerISO\Lang\Japanese.lng
%PROGRAM_FILES%\PowerISO\Lang\Slovenian.lng
%PROGRAM_FILES%\PowerISO\Lang\German.lng
%PROGRAM_FILES%\PowerISO\Lang\Russian.lng