Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'igfxtray Module' = '%WINDIR%\igfxtray.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\USB.exe
Malicious functions:
Executes the following:
- '<SYSTEM32>\regsvr32.exe' %WINDIR%\msinet.ocx
- '<SYSTEM32>\regsvr32.exe' %WINDIR%\mswinsck.ocx
Modifies file system :
Creates the following files:
- %WINDIR%\igfxtray.exe
- %WINDIR%\Opened.dat
- %WINDIR%\mswinsck.ocx
- %WINDIR%\msinet.ocx
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\USB.exe
- <Drive name for removable media>:\autorun.inf
Network activity:
Connects to:
- 'ir##.biyik.net':7575
UDP:
- DNS ASK ir##.biyik.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
