Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'software' = '<SYSTEM32>\spools.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\twinz.exe
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)
Executes the following:
- '%WINDIR%\regedit.exe' /s C:\x.reg
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoRun' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFind' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderoptions' = '00000001'
Modifies file system :
Creates the following files:
- <SYSTEM32>\spools.exe
- %ALLUSERSPROFILE%\Desktop\NewFolder.exe
- C:\autorun.inf
- C:\x.reg
- C:\twinz.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\twinz.exe
- C:\autorun.inf
- C:\twinz.exe
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: '(null)'
- ClassName: 'RegEdit_RegEdit' WindowName: '(null)'
