Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe, C:\Seguridad\ctfmon.exe'
- [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe, C:\Seguridad\ctfmon.exe'
- [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows] 'Load' = 'C:\Seguridad\ctfmon.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'index' = 'C:\Seguridad\ctfmon.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'index' = 'C:\Seguridad\ctfmon.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\AutoRun.inf
- <Drive name for removable media>:\Seguridad\@b@ddon.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:
- C:\Seguridad\ctfmon.exe
Modifies file system :
Creates the following files:
- C:\RECYCLED\network.pcap
- C:\RECYCLED\dwshield.log
- C:\RECYCLED\NTDETECT.COM
- C:\AutoRun.inf
- C:\RECYCLED\ntldr
- C:\Bootfont.sys
- C:\Seguridad\ctfmon.exe
- C:\Seguridad\@b@ddon.exe
- C:\RECYCLED\Bootfont.sys
- C:\RECYCLED\boot.ini
Sets the 'hidden' attribute to the following files:
- C:\AutoRun.inf
- <Drive name for removable media>:\Seguridad\@b@ddon.exe
- <Drive name for removable media>:\AutoRun.inf
- C:\Bootfont.sys
- C:\Seguridad\ctfmon.exe
- C:\Seguridad\@b@ddon.exe
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: ''
- ClassName: 'Indicator' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'MS_WINHELP' WindowName: ''
