ET MALWARE FTCode Stealer CnC Activity

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.request_body;
content:"l=dj0"; depth:5; fast_pattern;
pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})/Rs";
http.header_names;
content:!"Referer";
content:!"User-Agent";
Raw source ET MALWARE FTCode Stealer 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 FTCode Stealer CnC Activity";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.request_body;
    content:"l=dj0"; depth:5; fast_pattern;
    pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})/Rs";
    http.header_names;
    content:!"Referer";
    content:!"User-Agent";
    reference:url,www.malware-traffic-analysis.net/2020/04/02/index.html;
    classtype:command-and-control;
    sid:2029803; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_04_03, deployment Perimeter, confidence High, signature_severity Major, updated_at 2020_11_19;
)

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