Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'UserInit' = '<SYSTEM32>\userint.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\ntokrnl.exe
Malicious functions:
Executes the following:
- <SYSTEM32>\tftp.exe -i wbn.zapto.org get ufo.exe C:\sysdump.exe
Modifies file system :
Creates the following files:
- <SYSTEM32>\userint.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\ntokrnl.exe
Network activity:
UDP:
- DNS ASK wb#.#apto.org
- 'wb#.#apto.org':69
