Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'System Lsass' = '%WINDIR%\lsass.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.exe
- <Drive name for removable media>:\Autorun.inf
Malicious functions:
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
- Windows Task Manager (Taskmgr)
- Registry Editor (RegEdit)
Modifies settings of Windows Explorer:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoFolderOptions' = '00000001'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoRun' = '00000001'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoFind' = '00000001'
Modifies file system :
Creates the following files:
- %WINDIR%\lsass.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\Autorun.exe
- <Drive name for removable media>:\Autorun.inf
- %WINDIR%\lsass.exe
Miscellaneous:
Searches for the following windows:
- ClassName: 'ComboBoxEx32' WindowName: ''
- ClassName: 'ComboBox' WindowName: ''
- ClassName: 'Edit' WindowName: ''
- ClassName: 'CabinetWClass' WindowName: ''
- ClassName: 'WorkerW' WindowName: ''
- ClassName: 'ReBarWindow32' WindowName: ''