Technical Information
To ensure autorun and distribution:
Creates the following files on removable media:
- <Drive name for removable media>:\nkuaan.exe
- <Drive name for removable media>:\autorun.inf
Malicious functions:
Executes the following:
- '<SYSTEM32>\attrib.exe' +h E:\autorun.inf
- '<SYSTEM32>\attrib.exe' +h E:\nkuaan.exe
- '<SYSTEM32>\attrib.exe' +h E:\Mswinsck.ocx
- '<SYSTEM32>\cmd.exe' /c <Current directory>\vzshdl.bat
- '<SYSTEM32>\chcp.com' 936
- '<SYSTEM32>\ping.exe' 127.0.0.1 -n 3
Modifies file system :
Creates the following files:
- <Current directory>\yxe3so.ini
- <Current directory>\vzshdl.bat
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\nkuaan.exe
- <Drive name for removable media>:\autorun.inf
Deletes the following files:
- <Current directory>\yxe3so.ini
Network activity:
Connects to:
- '88.##an-shi.com':8
UDP:
- DNS ASK 88.##an-shi.com