Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Observed Fake Privnote Domain (privatemessage .net in TLS SNI)"; flow:established,to_server; tls.sni; bsize:18; content:"privatemessage.net"; fast_pattern; reference:url,krebsonsecurity.com/2024/04/fake-lawsuit-threat-exposes-privnote-phishing-sites/; classtype:trojan-activity; sid:2051998; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_04_11, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_11, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)