alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Spora Ransomware SSL Certificate Detected"; flow:established,to_client; tls.cert_subject; content:"CN=spora.bz"; fast_pattern; classtype:trojan-activity; sid:2024043; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_03_09, deployment Perimeter, malware_family Spora, confidence High, signature_severity Major, tag Ransomware, updated_at 2022_03_23, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)