.png_<NUMBER> - Unknown?

[Havi]

Hey!

So I've extracted some data from a game called 'I love Coffee' and it includes a folder with all the icons related to the game but they all have this File Format called .png_<NUMBER> 18508

I don't know if ANY of you guys know how to convert this to .png or whatever.

http://www71.zippyshare.com/v/5lXODTyT/file.html

[Acewell]

it looks to be a png mostly xored with AA except for maybe the last 12 bytes but i still can't open it