ET ATTACK_RESPONSE ScreenConnect RMM Payload Delivered via Fake Docusign Page

Query · suricata

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";
target:dest_ip;
Raw source ET ATTACK_RESPONSE ScreenConnect RMM Payload Delivered via Fake Docusign Page · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
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;
)

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