alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Glupteba CnC Domain (venoxcontrol .com in TLS SNI)"; flow:established,to_server; tls.sni; content:"venoxcontrol.com"; endswith; reference:url,blog.trendmicro.com/trendlabs-security-intelligence/glupteba-campaign-hits-network-routers-and-updates-cc-servers-with-data-from-bitcoin-transactions/; classtype:command-and-control; sid:2027946; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_09_05, deployment Perimeter, malware_family Glupteba, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_09_17, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)