Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe "%WINDIR%\Drive XP.exe"'
Creates or modifies the following files:
- %ALLUSERSPROFILE%\Start Menu\Programs\Startup\StartUp.exe
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\UR32.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
- file extensions
Creates and executes the following:
- '%WINDIR%\inf\UR32.exe'
- '%WINDIR%\inf\ctfmon.exe'
- '%ALLUSERSPROFILE%\Start Menu\Programs\Startup\StartUp.exe'
Modifies file system :
Creates the following files:
- %WINDIR%\inf\MyEgg.exe
- %ALLUSERSPROFILE%\Desktop\4U.txt
- %WINDIR%\inf\UR32.exe
- %WINDIR%\inf\ctfmon.exe
- %WINDIR%\system\msvbvm60.dll
- %WINDIR%\Drive XP.exe
- %WINDIR%\inf\msvbvm60.dll
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\UR32.exe
- %WINDIR%\Drive XP.exe
Deletes the following files:
- %TEMP%\~DFA8D5.tmp
- %TEMP%\~DFBC5C.tmp
Miscellaneous:
Searches for the following windows:
- ClassName: 'ComboBox' WindowName: '(null)'
- ClassName: 'Edit' WindowName: '(null)'
- ClassName: '(null)' WindowName: '3? Floppy (A:)'
- ClassName: 'ComboBoxEx32' WindowName: '(null)'
- ClassName: 'ExploreWClass' WindowName: '(null)'
- ClassName: 'WorkerW' WindowName: '(null)'
- ClassName: 'ReBarWindow32' WindowName: '(null)'
