Rule History

alert tcp $HOME_NET any -> $EXTERNAL_NET 3389 (msg:"ET MALWARE Observed Rogue RDP (UAC-0215) Domain (s3-ucia.cloud In TLS RDP Traffic)"; flow:established,to_server; content:"|16 03|"; startswith; content:"s3-ucia.cloud"; distance:0; fast_pattern; reference:url,cert.gov.ua/article/6281076; classtype:command-and-control; sid:2057560; rev:1; metadata:attack_target Client_Endpoint, tls_state plaintext, created_at 2024_11_14, deployment Perimeter, confidence High, signature_severity Major, tag SSL_TLS_SNI, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_11_14, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)