alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE MSIL/May Ransomware SSL Cert Observed"; flow:established,to_client; tls.cert_subject; content:"CN=mayofware.solutions"; reference:md5,9bee9fbe8c87f491ed31e94bb0c2e06f; classtype:trojan-activity; sid:2024304; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_05_16, deployment Perimeter, malware_family May, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_23, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)