ET MALWARE Win32/Cryptbotv2 CnC Activity (POST) M1

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php"; endswith;
http.header_names;
content:"|0d 0a|Content-Type|0d 0a|User-Agent|0d 0a|Host|0d 0a|"; startswith;
content:!"Referer";
http.request_body;
content:"form-data|3b 20|name=|22|files|5b 5d 22 3b 20|"; fast_pattern;
Raw source ET MALWARE Win32/Cryptbotv2 CnC Activity (POST) M1 · 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) M1";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.header_names;
    content:"|0d 0a|Content-Type|0d 0a|User-Agent|0d 0a|Host|0d 0a|"; startswith;
    content:!"Referer";
    http.request_body;
    content:"form-data|3b 20|name=|22|files|5b 5d 22 3b 20|"; fast_pattern;
    reference:md5,859c659aee8b897aeebf4b87364cc6d1;
    reference:md5,df03805e4a11b88a7ea81909cd407647;
    reference:url,twitter.com/abuse_ch/status/1572477247780446209;
    classtype:trojan-activity;
    sid:2038918; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_09_21, deployment Perimeter, malware_family Cryptbot, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_27;
)

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