Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '%WINDIR%\svcnost.exe'
Malicious functions:
Executes the following:
- <SYSTEM32>\logonui.exe /status /shutdown
Attempts to shut down the Windows operating system.
Modifies file system :
Creates the following files:
- %WINDIR%\svcnost.exe
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'StatusWindowClass' WindowName: ''