Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE DNS Query to Merlin C2 Domain (cloud .keepasses .com)"; dns.query; dotprefix; content:".cloud.keepasses.com"; nocase; endswith; reference:url,news.sophos.com/en-us/2024/06/05/operation-crimson-palace-sophos-threat-hunting-unveils-multiple-clusters-of-chinese-state-sponsored-activity-targeting-southeast-asia/; classtype:trojan-activity; sid:2053330; rev:2; metadata:attack_target Client_Endpoint, created_at 2024_06_07, deployment Perimeter, deprecation_reason Relevance, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_04_21, reviewed_at 2025_04_21;)