Malware, short for malicious software, is software or code specifically designed to damage, disrupt computer systems, or gain unauthorized access to sensitive information. Based on type classification, one of the well-known types of malware is ransomware. Usually, ransomware will encrypt the files on a computer system and then demand a ransom from the owner of the computer system so that the owner can regain access to the encrypted files. Sometimes in some cases, ransomware is able to delete files without input from the computer system owner. This research only uses dynamic analysis approach on the analysis process of three ransomware samples that are known for successfully causing losses to many computer systems throughout the world, namely WannaCry, Locky, and Jigsaw. It utilizes Process Monitor and x64dbg to track the processes carried out by the ransomwares. The purpose of this research is to determine which of the three samples has the highest to lowest damage level using metrics that are based on deletion attack structure and cryptographic attack structure. The findings of this research indicate that WannaCry has the highest damage level followed by Locky and then Jigsaw.