alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE UNK_MonkeyWrench Payload Request"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/jfgg/"; startswith; fast_pattern; content:".rar"; endswith; http.user_agent; content:"curl|2f|"; startswith; http.accept; bsize:3; content:"|2a 2f 2a|"; http.header_names; content:"|0d 0a|host|0d 0a|user-agent|0d 0a|accept|0d 0a 0d 0a|"; nocase; reference:md5,664a7f2d21f20f4a9747981145cb1332; classtype:trojan-activity; sid:2068524; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_04_01, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Critical, tag c2, tag Description_Generated_By_Proofpoint_Nexus, tag UNK_MonkeyWrench, updated_at 2026_04_01, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)