Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Glupteba CnC Domain (localstats .org in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".localstats.org"; endswith; fast_pattern; reference:md5,925efb59b784a35a3a5a0e49c4679e54; classtype:domain-c2; sid:2054708; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2024_07_26, deployment Perimeter, malware_family Glupteba, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_07_26, reviewed_at 2025_08_05, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)