alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE ZharkBot User-Agent Observed"; flow:established,to_server; http.user_agent; content:"OpiumG4ng"; fast_pattern; reference:url,research.openanalysis.net/zharkbot/rust/triage/2024/07/07/zharkbot.html; classtype:trojan-activity; sid:2054413; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2024_07_09, deployment Perimeter, malware_family ZharkBOT, confidence High, signature_severity Major, tag c2, updated_at 2024_07_09, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)