ET EXPLOIT_KIT Observed ClickFix Loader Inbound

Query · suricata

flow:established,to_client;
http.stat_code;
content:"200";
http.response_body;
content:"function _0x"; nocase; startswith;
content:"function __gethiddenurl()"; fast_pattern; nocase;
content:"win_ts"; nocase;
content:"04534170"; nocase;
content:"abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz0123456789+/="; nocase;
content:"decodeuricomponent"; nocase;
content:"cf-used-at"; nocase;
Raw source ET EXPLOIT_KIT Observed ClickFix Loader Inbound · Suricata
Esc
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 EXPLOIT_KIT Observed ClickFix Loader Inbound";
    flow:established,to_client;
    http.stat_code;
    content:"200";
    http.response_body;
    content:"function _0x"; nocase; startswith;
    content:"function __gethiddenurl()"; fast_pattern; nocase;
    content:"win_ts"; nocase;
    content:"04534170"; nocase;
    content:"abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz0123456789+/="; nocase;
    content:"decodeuricomponent"; nocase;
    content:"cf-used-at"; nocase;
    classtype:exploit-kit;
    sid:2071397; rev:2;
    metadata:affected_product Web_Browsers, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_08_05, deployment Perimeter, malware_family ClickFix, performance_impact Low, confidence High, signature_severity Major, tag Exploit_Kit, tag compromised_website, updated_at 2026_08_12, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1189, mitre_technique_name Drive_by_Compromise;
)

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