alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE ErbiumStealer Domain (erbium .ml) in TLS SNI"; flow:established,to_server; tls.sni; dotprefix; content:".erbium.ml"; endswith; fast_pattern; reference:md5,e1826f107e517c0cb9a9b02f74cb94f2; classtype:domain-c2; sid:2038724; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_09_01, deployment Perimeter, malware_family Erbium, performance_impact Low, confidence High, signature_severity Major, updated_at 2022_09_01;)