Versions (4)
Version DetailsCurrent
Rev: 2 • Dec 21, 2023, 12:00 PMET MALWARE Observed Brute Ratel Framework Related Domain (azureclouder .com in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Brute Ratel Framework Related Domain (azureclouder .com in TLS SNI)"; flow:established,to_server; tls.sni; bsize:16; content:"azureclouder.com"; fast_pattern; reference:md5,0603dab442f851d1e66642f95b485c32; classtype:domain-c2; sid:2049808; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_12_21, deployment Perimeter, deprecation_reason Age, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_22, reviewed_at 2024_03_22, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)
Dec 21, 2023, 12:00 PM
Mar 22, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 15, 2025, 8:34 PM
rules/emerging-malware.rules