Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Fake Chrome Landing Domain (chromiumbase .site in TLS SNI)"; flow:established,to_server; tls.sni; bsize:17; content:"chromiumbase.site"; fast_pattern; reference:url,twitter.com/g0njxa/status/1713919587996057847; classtype:trojan-activity; sid:2048574; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_10_16, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_10_16, reviewed_at 2024_01_26, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)