Yep, here's a fun one. End-user (with an absence of antivirus) has had all his files locked by Cryptolocker. Has no backups or previous-versions. (Naturally.) file modification date was the 30th of July... tried using FireEye's service and it says the files aren't encrypted by Cryptolocker.. so it's obviously some sort of variant. Any other options, apart from stumping up cash?