Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed ZeroTrace Domain (wittenhorst .eu in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".wittenhorst.eu"; endswith; fast_pattern; reference:url,x.com/James_inthe_box/status/2011441279532724238; classtype:trojan-activity; sid:2066787; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_01_15, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_01_15;)