"Dark Angels demanded a $51 million ransom, claimed to have stolen over 27 TB of corporate data, and encrypted the company's VMware ESXi virtual machines. A RagnarLocker ransomware variant was used to encrypt the company's files during the attack. The relationship betweenRagnarLocker and Dark Angels is not clear, but the group was using the ransomware prior to the law enforcement action against RagnarLocker." Zscaler