Versions (2)
Version DetailsCurrent
Rev: 1 • Jul 24, 2025, 12:00 PMET INFO Observed Commonly Actor Abused Online Service Domain (0zz0 .com in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed Commonly Actor Abused Online Service Domain (0zz0 .com in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".0zz0.com"; endswith; fast_pattern; reference:md5,80accd9b7e948bd1936e32103d2df14b; classtype:misc-activity; sid:2063693; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_07_24, deployment Perimeter, confidence High, signature_severity Informational, tag TA_Abused_Online_Service, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_07_24, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)
Jul 24, 2025, 12:00 PM
Jul 24, 2025, 12:00 PM
Jul 24, 2025, 9:34 PM
Jul 25, 2025, 8:34 PM
rules/emerging-info.rules