alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE StrongPity APT SSL Certificate Detected"; flow:established,to_client; tls.cert_subject; content:"CN=mevlut.oncu.example.com"; fast_pattern; reference:url,citizenlab.ca/2018/03/bad-traffic-sandvines-packetlogic-devices-deploy-government-spyware-turkey-syria/; classtype:targeted-activity; sid:2025416; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_03_12, deployment Perimeter, malware_family StrongPity, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_13;)