I'm looking for a good program to break some encyption. Anyone know of any good ones. I don't know what type of encyption it is... but maybe something that runs through it all and tells me any type of patterns or something.

Preferably something free. We have a employee that left and decided to encrypt some files we need. I open them and I get gibberish stuff like this

1a7R7W1D3K9G6E6W4

It doesn't prompt for a username/password before I open it so I'm lost. Any ideas?