alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Grizzly Loader Config Inbound M1"; flow:established,to_client; http.response_body; content:"|7b 22|reason|22 3a|"; depth:20; fast_pattern; content:"|22|client|5f|id|22 3a|"; distance:0; content:"|22|filename|22 3a|"; distance:0; content:"|22|category|22 3a|"; distance:0; classtype:trojan-activity; sid:2071864; rev:1; metadata:affected_product Windows_Client, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_08_31, deployment Perimeter, deployment SSLDecrypt, malware_family GrizzlyLoader, confidence High, signature_severity Critical, tag c2, updated_at 2026_08_31, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:dest_ip;)