Rule History

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Win32/Dalexis.A Possible SSL Cert (smartoptionsinc.com)"; flow:established,to_client; tls.cert_serial; content:"05:11:32:08:1D:81"; content:"O=Synology Inc."; reference:md5,ef2f9909c76d32b51598c54d5685af7e; classtype:trojan-activity; sid:2019923; rev:3; metadata:attack_target Client_Endpoint, created_at 2014_12_12, deployment Perimeter, confidence Medium, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2024_04_12;)