ET MALWARE Win32/Cryptbotv2 CnC Activity (POST) M2

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php";
http.request_body;
content:"form-data|3b 20|name=|22|files|5b 5d 22 3b 20|"; fast_pattern;
http.header_names;
content:"|0d 0a|Content-Type|0d 0a|Host|0d 0a|Content-Length|0d 0a|"; startswith;
content:!"|0d 0a|Referer|0d 0a|";
Raw source ET MALWARE Win32/Cryptbotv2 CnC Activity (POST) M2 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Cryptbotv2 CnC Activity (POST) M2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php";
    http.request_body;
    content:"form-data|3b 20|name=|22|files|5b 5d 22 3b 20|"; fast_pattern;
    http.header_names;
    content:"|0d 0a|Content-Type|0d 0a|Host|0d 0a|Content-Length|0d 0a|"; startswith;
    content:!"|0d 0a|Referer|0d 0a|";
    classtype:trojan-activity;
    sid:2045231; rev:3;
    metadata:created_at 2023_04_28, malware_family Win32_Cryptbotv2, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_13;
)

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