alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Possible DarkTequila SSL/TLS Certificate Observed"; flow:established,to_client; tls.cert_subject; content:"C=US, ST=OH, O=International Security Depart, CN=the-ebooks-store.com"; content:"contact@infws.com"; tls.cert_issuer; content:"O=International Security Depart, L=Greater Cleveland, ST=OH, C=US, CN=International Security Depart Ca"; content:"contact@infws.com"; fast_pattern; tls.cert_serial; content:"00:ED"; reference:md5,9fbdc5eca123e81571e8966b9b4e4a1e; classtype:trojan-activity; sid:2026540; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_10_24, deployment Perimeter, confidence High, signature_severity Major, tag DarkTequila, updated_at 2025_07_24;)