ET ATTACK_RESPONSE ClickFix Related Payload Inbound

Query · suricata

flow:established,to_client;
http.response_body; bsize:<2048;
content:!"|3c 21|DOCTYPE|20|html|3e|";
content:!"<title>";
content:"var|20|s|20 3d 20|document|2e|createElement|28 27|script|27 29 3b 20|s|2e|src|20 3d 20|"; fast_pattern;
content:"document|2e|getElementsByTagName|28 27|head|27 29 5b|0|5d 2e|appendChild|28|s|29 3b|";
target:dest_ip;
Raw source ET ATTACK_RESPONSE ClickFix Related Payload Inbound · 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 ClickFix Related Payload Inbound";
    flow:established,to_client;
    http.response_body; bsize:<2048;
    content:!"|3c 21|DOCTYPE|20|html|3e|";
    content:!"<title>";
    content:"var|20|s|20 3d 20|document|2e|createElement|28 27|script|27 29 3b 20|s|2e|src|20 3d 20|"; fast_pattern;
    content:"document|2e|getElementsByTagName|28 27|head|27 29 5b|0|5d 2e|appendChild|28|s|29 3b|";
    reference:url,urlscan.io/result/019609bd-9c94-773f-b3b6-eca6c74ca38e/dom/;
    classtype:trojan-activity;
    sid:2061865; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_04_24, deployment Perimeter, deployment SSLDecrypt, malware_family ClickFix, confidence Medium, signature_severity Major, updated_at 2025_04_24, 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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