Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe <SYSTEM32>\microsoft14.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe \system32\.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\AUTORUN.inf
Malicious functions:
Creates and executes the following:
- <SYSTEM32>\microsoft14.exe
Executes the following:
- %WINDIR%\explorer.exe <SYSTEM32>
- %WINDIR%\explorer.exe <Current directory>
Modifies file system :
Creates the following files:
- <SYSTEM32>\microsoft14.exe
- <SYSTEM32>\yicohvm.ico
- %WINDIR%\hfname.hvm
- C:\AUTORUN.inf
- <Current directory>\AUTORUN.inf
Sets the 'hidden' attribute to the following files:
- <Current directory>\AUTORUN.inf
- <Drive name for removable media>:\AUTORUN.inf
- C:\AUTORUN.inf
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: '' WindowName: ''
