alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed DarkSide Ransomware Domain (baroquetees .com in TLS SNI)"; flow:established,to_server; tls.sni; content:"baroquetees.com"; bsize:15; fast_pattern; reference:url,twitter.com/Bank_Security/status/1387787132249518087; reference:md5,54f99323245d439893539eb6c7cd0239; classtype:domain-c2; sid:2032894; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_04_30, deployment Perimeter, malware_family DarkSide, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_04_30, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)