Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows] 'Load' = '<SYSTEM32>\dxsetup.exe'
Creates or modifies the following files:
- %WINDIR%\Tasks\At5.job
- %WINDIR%\Tasks\At6.job
- %WINDIR%\Tasks\At7.job
- %WINDIR%\Tasks\At4.job
- %WINDIR%\Tasks\At1.job
- %WINDIR%\Tasks\At2.job
- %WINDIR%\Tasks\At3.job
Malicious functions:
Creates and executes the following:
- '%HOMEPATH%\Templates\RUNDLL32.exe' 1001
Executes the following:
- '<SYSTEM32>\at.exe' 20:00 /interactive /every:M,T,W,Th,F,S,Su <SYSTEM32>\network.exe
- '<SYSTEM32>\at.exe' 15:00 /interactive /every:M,T,W,Th,F,S,Su <SYSTEM32>\network.exe
- '<SYSTEM32>\at.exe' 21:00 /interactive /every:M,T,W,Th,F,S,Su <SYSTEM32>\network.exe
- '%WINDIR%\regedit.exe' /s "%ALLUSERSPROFILE%\Templates\backup.reg"
- '<SYSTEM32>\cmd.exe' /c ""%ALLUSERSPROFILE%\Templates\config.cmd" "
- '<SYSTEM32>\at.exe' 08:00 /interactive /every:M,T,W,Th,F,S,Su <SYSTEM32>\network.exe
- '<SYSTEM32>\cmd.exe' /c ""%ALLUSERSPROFILE%\Templates\config.bat" "
- '<SYSTEM32>\at.exe' 09:00 /interactive /every:M,T,W,Th,F,S,Su <SYSTEM32>\network.exe
- '<SYSTEM32>\at.exe' 12:40 /interactive /every:M,T,W,Th,F,S,Su <SYSTEM32>\network.exe
- '<SYSTEM32>\at.exe' 10:00 /interactive /every:M,T,W,Th,F,S,Su <SYSTEM32>\network.exe
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\iepv[1].html
- %HOMEPATH%\Templates\RUNDLL32.exe
- %HOMEPATH%\Templates\v.ini
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\mu[1].html
- %ALLUSERSPROFILE%\Templates\config.cmd
- %ALLUSERSPROFILE%\Templates\config.bat
- %HOMEPATH%\Desktop\Internet Explorer.lnk
- %ALLUSERSPROFILE%\Templates\backup.reg
Sets the 'hidden' attribute to the following files:
- %HOMEPATH%\Templates\RUNDLL32.exe
Deletes the following files:
- %HOMEPATH%\Templates\v.ini
- %ALLUSERSPROFILE%\Templates\config.cmd
- %ALLUSERSPROFILE%\Templates\config.bat
Network activity:
Connects to:
- 'www.xx##e.com':80
- 'localhost':1035
TCP:
HTTP GET requests:
- www.xx##e.com/mu.html
- www.xx##e.com/iepv.html
UDP:
- DNS ASK www.xx##e.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'MS_AutodialMonitor' WindowName: '(null)'
- ClassName: 'MS_WebcheckMonitor' WindowName: '(null)'
- ClassName: 'RegEdit_RegEdit' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
