What is the file format?

I have seen a file with following format I do not know the file type and I do not know how to decode this. Can anyone please tell me what is this file called and how to decode??

5f5f 5445 5854 0000 0000 0000 0000 0000
4c23 0000 4800 0000 4c13 0000 0200 0000
0000 0000 0000 0000 0804 0080 0000 0000