Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows Service CV' = 'bfnywo.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices] 'Windows Service CV' = 'bfnywo.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows Service CV' = 'bfnywo.exe'
Malicious functions:
Creates and executes the following:
- <SYSTEM32>\bfnywo.exe 284 "<Full path to virus>"
Modifies file system :
Creates the following files:
- <SYSTEM32>\bfnywo.exe
Sets the 'hidden' attribute to the following files:
- <SYSTEM32>\bfnywo.exe
Deletes itself.
Network activity:
Connects to:
- '25#.#55.255.255':51115
- '<Private IP address>':139
UDP:
- DNS ASK ne#.najd.us
- '<Private IP address>':1035
Miscellaneous:
Searches for the following windows:
- ClassName: 'mIRC' WindowName: ''
- ClassName: 'Indicator' WindowName: ''
