alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET ATTACK_RESPONSE ScreenConnect RMM Payload Delivered via Fake Docusign Page"; flow:established,to_client; http.response_body; content:"|5c 2f|ScreenConnect|2e|ClientSetup|2e|msi|5c 22|"; fast_pattern; content:"DocuSign|20|All|20|rights|20|reserved|2e 5c|n"; classtype:trojan-activity; sid:2069334; 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_05_18, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag ScreenConnect, tag RMM, updated_at 2026_05_18, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1105, mitre_technique_name Ingress_Tool_Transfer; target:dest_ip;)