Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'UserInit' = '<SYSTEM32>\userinit.exe,%HOMEPATH%\My Documents\MSDCSC\msdcsc.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'explorer.exe' = '%HOMEPATH%\My Documents\MSDCSC\msdcsc.exe'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
- Windows Security Center
blocks the following features:
- User Account Control (UAC)
- Windows Security Center
Executes the following:
- '%HOMEPATH%\My Documents\MSDCSC\msdcsc.exe'
- '<SYSTEM32>\cmd.exe' /k attrib "%HOMEPATH%\Local Settings\Temp" +s +h
- '<SYSTEM32>\attrib.exe' "%TEMP%\HD.exe" +s +h
- '<SYSTEM32>\attrib.exe' "%HOMEPATH%\Local Settings\Temp" +s +h
- '<SYSTEM32>\notepad.exe'
- '%TEMP%\zg.exe' -p12345 -d%HOMEPATH%\Local Settings\Temp
- '<SYSTEM32>\cmd.exe' /c ""%TEMP%\12.bat" "
- '%TEMP%\HD.exe'
- '<SYSTEM32>\cmd.exe' /k attrib "%TEMP%\HD.exe" +s +h
- '<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %TEMP%\12.jpg
Injects code into
the following system processes:
- <SYSTEM32>\notepad.exe
Modifies file system:
Creates the following files:
- %TEMP%\12.jpg
- %HOMEPATH%\My Documents\MSDCSC\msdcsc.exe
- %TEMP%\HD.exe
- %TEMP%\12.bat
- %TEMP%\zg.exe
Sets the 'hidden' attribute to the following files:
- %TEMP%\HD.exe
- %HOMEPATH%\My Documents\MSDCSC\msdcsc.exe
Network activity:
Connects to:
- 'localhost':1604
- 'li###k.ddns.net':1604
UDP:
- DNS ASK li###k.ddns.net
Miscellaneous:
Searches for the following windows:
- ClassName: '#32770' WindowName: '12 - Windows Picture and Fax Viewer'
- ClassName: '#32770' WindowName: ''
- ClassName: 'SysListView32' WindowName: ''
- ClassName: 'EDIT' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'ShImgVw:CPreviewWnd' WindowName: ''
