WannaCry (also known as WCry or WanaCryptor) malware is a self-propagating (worm-like) ransomware that spreads through internal networks and over the public internet by exploiting a vulnerability in Microsoft’s Server Message Block (SMB) protocol, MS17-010. The WannaCry malware consists of two distinct components, one that provides ransomware functionality and a component used for propagation, which contains functionality to enable SMB exploitation capabilities.