alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE APT28/Sednit SSL Cert"; flow:established,to_client; tls.cert_subject; content:"CN=ngefqevwe"; fast_pattern; reference:md5,f7ee38ca49cd4ae35824ce5738b6e587; reference:url,www.welivesecurity.com/wp-content/uploads/2016/10/eset-sednit-part-2.pdf; classtype:targeted-activity; sid:2023423; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_10_25, deployment Perimeter, deprecation_reason Age, malware_family APT28_Sednit, confidence High, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2024_04_03, reviewed_at 2024_04_03;)