Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer "%HOMEPATH%\SendTo\explore.exe" Set'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\UltraSurf97.exe
Creates the following files on removable media:
- <Drive name for removable media>:\Autorun.inf
- <Drive name for removable media>:\U97_2.exe
- <Drive name for removable media>:\U97.exe
Malicious functions:
Creates and executes the following:
- %HOMEPATH%\SendTo\explore.exe Set
Modifies file system :
Creates the following files:
- %HOMEPATH%\SendTo\explore.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\Autorun.inf
- <Drive name for removable media>:\U97_2.exe
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: 'UltraSurf97.del'
- ClassName: '' WindowName: 'UltraSurf97.hide'
- ClassName: '' WindowName: 'UltraSurf97.delete'
- ClassName: 'WindowClass_0' WindowName: ''
- ClassName: '' WindowName: 'Windows Task Manager'
- ClassName: 'MS_WebcheckMonitor' WindowName: ''
- ClassName: 'MS_AutodialMonitor' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: '' WindowName: 'UltraSurf97.show'
- ClassName: '' WindowName: 'UltraSurf97'
