Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'ctfnom' = '%WINDIR%\Dir\ctfnom.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\Mirc.exe
Malicious functions:
Creates and executes the following:
- %WINDIR%\Dir\ctfnom.exe
Executes the following:
- <SYSTEM32>\net1.exe stop sharedaccess
- <SYSTEM32>\net.exe stop sharedaccess
Modifies file system :
Creates the following files:
- %WINDIR%\Dir\Dated.dat
- %WINDIR%\Dir\ctfnom.exe
Deletes the following files:
- %TEMP%\~DFCE77.tmp
Network activity:
Connects to:
- 'da####.zapto.org':2185
UDP:
- DNS ASK da####.zapto.org
- '<Private IP address>':1037
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''