Polymorphic Malware Polymorphic malware is a type of malware that constantly changes its identifiable features in order to evade detection. Many of the common forms of malware can be Polymorphic, including Viruses, Worms, Bots, Trojans, or Keyloggers . The malware is designed to be unrecognizable to detection methods. Commonly altered characteristics include the file’s Encryption Key, File Format, or simply its name. The malware is widespread . According to research and study, 97% of malware infections use polymorphic techniques. While this isn’t a new trend – the tactic has been used since the 90s – recently new, highly aggressive waves of the malware have emerged. One notorious example of polymorphic malware is CryptoWall , a type of strain that encrypts files on the victim’s computer and demands a ransom payment in exchange for their decryption. The polymorphic builder used in CryptoWall develops what is essentially a new variant for every potential vict