Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Chrysalis Backdoor CnC Domain in DNS Lookup (skycloudcenter .com)"; dns.query; dotprefix; content:".skycloudcenter.com"; nocase; endswith; reference:url,www.rapid7.com/blog/post/tr-chrysalis-backdoor-dive-into-lotus-blossoms-toolkit/; classtype:domain-c2; sid:2067263; rev:1; metadata:affected_product Notepad__, created_at 2026_02_02, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_02_02;)