Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Suspected TA445 Spearphishing Related Domain (bigmir .space in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".bigmir.space"; endswith; fast_pattern; reference:url,otx.alienvault.com/pulse/621cce4e2752128dbfe537ed; classtype:credential-theft; sid:2035346; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_02_28, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_09, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)