Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'FiReWall' = '%WINDIR%\YCF.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\SysTem32.exe
- <Drive name for removable media>:\YCF.exe
- <Drive name for removable media>:\Autorun.inf
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Modifies file system :
Creates the following files:
- C:\SysTem32.exe
- %WINDIR%\YCF.exe
- <SYSTEM32>.ini
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\YCF.exe
- <Drive name for removable media>:\Autorun.inf
- <SYSTEM32>.ini
Deletes the following files:
- C:\SysTem32.exe
Network activity:
Connects to:
- 'me####udi.no-ip.biz':6667
UDP:
- DNS ASK me####udi.no-ip.biz
- '<Private IP address>':1035
