First of all, I am very sorry to hear about the hack.
I've read on another thread that even an exchange account was hacked. Also this .. big amount of BTC.
I understand that people need help. But assuming that everybody has good intentions... sigh

Sorry

I was expecting that Multibit creator could have spent 1 hour or two to create a makeshift .wallet or .key file out of the recoverable data.
Yes, I know, Multibit
classic is not anymore advised to use. And I will say the same, now from experience. I made some test myself to help OP and I managed easily to corrupt one of my wallets (I think that Multibit decided to sync when I was closing it; I'm not sure though). Nothing was lost though.
Nevertheless, the OP said his wallet file wasn't encrypted, so that shouldn't be a problem for him.
i have only original .wall .info files and data file ,it was not encrypted , i had not exported keys at that moment.
I missed that. Sorry.
That was as bad idea for OP as not keeping a valid backup (when I used Multibit as primary wallet, I had at least a backup of the wallet and one with the exported key).
Well.. then the hacker had a very easy job. Really sorry

Unfortunately I haven't yet found a tutorial explaining how to decrypt a .wallet file using openssl, or figured out how to do it myself.
I've looked briefly into Multibit source code, but it uses packages I couldn't get (and Java is not the language I know best) so I got stuck.
My research is not needed anymore. And unfortunately this is not a good thing.