alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Aura Ransomware User-Agent"; flow:established,to_server; http.user_agent; content:"{KIARA}"; depth:7; endswith; fast_pattern; reference:md5,dde4654f1aa9975d1ffea1af8ea5015f; classtype:trojan-activity; sid:2026100; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_09_06, deployment Perimeter, deprecation_reason Age, malware_family Aura, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_18, reviewed_at 2023_12_18, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)