The 4.1.3 version has some improved ransomware detection capabilities in it. I imagine once the process hit the decoy files it would be stopped from further damage. There are several variants of SamSam and I am sure that Wildfire has malicious verdicts for many of the artifacts. If you are a member of an information sharing group or subscribe to a threat intel subscription you may be able to obtain some IOC's for this particular strain. You could check some of those hash values in Wildfire to see what the verdicts are.
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