alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Malicious SSL Certificate detected (PyXie)"; flow:established,to_client; tls.cert_subject; bsize:14; content:"CN=sarymar.com"; fast_pattern; reference:url,threatvector.cylance.com/en_us/home/meet-pyxie-a-nefarious-new-python-rat.html; classtype:domain-c2; sid:2029083; rev:2; metadata:attack_target Client_and_Server, created_at 2019_12_02, deployment Perimeter, malware_family PyXie, performance_impact Low, confidence Medium, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_24, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities;)