Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'authhost.exe' = '"%APPDATA%\authhost.exe"'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'authhost.exe' = '"%APPDATA%\authhost.exe"'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\authhost.exe
Malicious functions:
Creates and executes the following:
- %APPDATA%\authhost.exe
Modifies file system :
Creates the following files:
- %APPDATA%\sysinfo_feuhwiegh.inf
- %APPDATA%\authhost.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\authhost.exe
- <Drive name for removable media>:\autorun.inf
- %APPDATA%\authhost.exe
- %APPDATA%\sysinfo_feuhwiegh.inf
Network activity:
Connects to:
- 'y0###.dyndns.info':3211
UDP:
- DNS ASK y0###.dyndns.info
- '<Private IP address>':1035
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
