Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Classes\TIFImage.Document\shell\open\command] '' = 'rundll32.exe <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %1'
- [<HKLM>\SOFTWARE\Classes\pngfile\shell\open\command] '' = 'rundll32.exe <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %1'
- [<HKLM>\SOFTWARE\Classes\Applications\shimgvw.dll\shell\open\command] '' = 'rundll32.exe <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %1'
- [<HKLM>\SOFTWARE\Classes\wmffile\shell\open\command] '' = 'rundll32.exe <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %1'
- [<HKLM>\SOFTWARE\Classes\jpegfile\shell\open\command] '' = 'rundll32.exe <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %1'
- [<HKLM>\SOFTWARE\Classes\emffile\shell\open\command] '' = 'rundll32.exe <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %1'
- [<HKLM>\SOFTWARE\Classes\Paint.Picture\shell\open\command] '' = 'rundll32.exe <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %1'
- [<HKLM>\SOFTWARE\Classes\pjpegfile\shell\open\command] '' = 'rundll32.exe <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %1'
- [<HKLM>\SOFTWARE\Classes\giffile\shell\open\command] '' = 'rundll32.exe <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %1'
Malicious functions:
Executes the following:
- '<SYSTEM32>\regsvr32.exe' /s <SYSTEM32>\shimgvw.dll
- '<SYSTEM32>\rundll32.exe' <SYSTEM32>\shell32.dll,OpenAs_RunDLL %TEMP%\FKVKXC.ico
Modifies file system:
Creates the following files:
- %TEMP%\FKVKXC.ico
- %TEMP%\RGI3.tmp
- %TEMP%\aut2.tmp
- %TEMP%\aut1.tmp
- %TEMP%\xkezuaq
Deletes the following files:
- %TEMP%\aut2.tmp
- %TEMP%\RGI3.tmp
- %TEMP%\aut1.tmp
- %TEMP%\xkezuaq
Network activity:
Connects to:
- 'sh####dark.ddns.ne':1337
UDP:
- DNS ASK sh####dark.ddns.ne
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
