a friend of mine has an old windows 2003 server with some shared folders, this morning, he found out that every files on these folders have been encrypted(probably) and left with .jse extension, the weird part, is that every file has the same size of 330KB and I'm able to send a sample if you guys want or need.
This friend of mine told me also that one of his colleagues received a mail carrying a false pdf invoice from which everything could be originated, but sorry, I don't have much more to share.
Since I'm unabe to find infos about ransomwares acting this way, I'm here asking for support, and of course I've already tried to upload a sample to ID Ransomware website.
Obviously, feel free to ask.
Thanks to everyone