CryptoWall 4.0 Released with New Features such as Encrypted File Names

CryptoWall 4.0 has been released that displays a redesigned ransom note, new filenames, and now encrypts a file’s name along with its data. We were alerted to this new variant by various members who have posted about being infected by what was being called the help_your_files ransomware.  Once we were able to analyze a sample, though, it was quickly[…]