ET MALWARE Fake Captcha Page Containing Powershell Inbound

Query · suricata

flow:established,to_client;
http.response_body;
content:"|3c|div|20|class|3d 22|captcha|2d|popup|22|";
content:"Windows|20|Key";
content:"var|20|copyText|20 3d 20 22|powershell"; fast_pattern;
Raw source ET MALWARE Fake Captcha Page Containing Powershell 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 MALWARE Fake Captcha Page Containing Powershell Inbound";
    flow:established,to_client;
    http.response_body;
    content:"|3c|div|20|class|3d 22|captcha|2d|popup|22|";
    content:"Windows|20|Key";
    content:"var|20|copyText|20 3d 20 22|powershell"; fast_pattern;
    reference:url,x.com/g0njxa/status/1834326261545529391;
    classtype:command-and-control;
    sid:2055846; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_09_13, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, updated_at 2024_09_13;
)

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