alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL Cert Associated with PolarEdge Botnet M3"; flow:established,to_client; tls.cert_issuer; content:"tr|40|gmail.com"; fast_pattern; reference:url,blog.sekoia.io/polaredge-unveiling-an-uncovered-iot-botnet/; classtype:trojan-activity; sid:2060438; rev:2; metadata:affected_product Any, attack_target IoT, created_at 2025_02_28, deployment Perimeter, malware_family PolarEdge, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2025_07_24, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1573, mitre_technique_name Encrypted_Channel;)