mmmm last versions of panda doesn't include datashield?
if last version include datashield can you retest it configuring it and including exe, zip, rar, 7zip, png, jpg, doc, docx etc etc in a folder and try if CryptoWall can encript the files or only run?
mm ok, i ask @Manzai , but i'm not sure if he can make "specific" test or only can make detection test.
Datashield protect access to folders blocking or asking if unknown source try to acces data.