alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET ATTACK_RESPONSE EtherHiding Payload Delivery Script Observed Inbound"; flow:established,to_client; http.response_body; content:"|24 7b|Compress|2d|Archive|20 2d|Debug|20 2d|DestinationPath|20 25|USERPROFILE|25|"; startswith; content:"|24|set|5f|scaler"; content:"Invoke|2d|RestMethod|20 2d|Uri|20 27|http|3a 2f 2f|127|2e|0|2e|0|2e|1|27 20 2d|Method|20|Get|20 2d|ErrorAction|20|SilentlyContinue"; fast_pattern; content:"|24|Win32|5f|count"; reference:md5,378457c08ad8203beb17a5c6b6052f23; classtype:trojan-activity; sid:2069279; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2026_05_13, deployment Perimeter, confidence High, signature_severity Major, updated_at 2026_05_13, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1105, mitre_technique_name Ingress_Tool_Transfer; target:dest_ip;)