ET MALWARE Win32/MailerBot CnC Activity

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php"; endswith;
http.cookie;
content:"PHPSESSID="; startswith;
isdataat:!35,relative;
http.request_body;
content:"status=0"; bsize:8; fast_pattern;
http.header_names;
content:!"Referer";
Raw source ET MALWARE Win32/MailerBot CnC Activity · 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/MailerBot CnC Activity";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.cookie;
    content:"PHPSESSID="; startswith;
    isdataat:!35,relative;
    http.request_body;
    content:"status=0"; bsize:8; fast_pattern;
    http.header_names;
    content:!"Referer";
    reference:md5,33ae450f091a57c042e9dd99800ff6c8;
    classtype:command-and-control;
    sid:2029183; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_12_18, deployment Perimeter, malware_family MailerBot, confidence High, signature_severity Major, updated_at 2019_12_18;
)

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