alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL Cert (Coinhive URL Shortener)"; flow:established,to_client; tls.cert_subject; content:"CN=cnhv.co"; nocase; endswith; reference:url,blog.sucuri.net/2018/05/cryptomining-through-disguised-url-shorteners.html; classtype:domain-c2; sid:2025582; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2018_05_22, deployment Perimeter, former_category COINMINER, malware_family CoinMiner, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_07_04, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)