ET MALWARE Suspicious User-Agent build - possibly Delf/Troxen/Zema

Query · suricata

flow:established,to_server;
http.user_agent;
content:"build"; depth:5;
pcre:"/^build\d/";
Raw source ET MALWARE Suspicious User-Agent build - possibly Delf/Troxen/Zema · 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 Suspicious User-Agent build - possibly Delf/Troxen/Zema";
    flow:established,to_server;
    http.user_agent;
    content:"build"; depth:5;
    pcre:"/^build\d/";
    reference:md5,3d18363a20882bd74ae7e0f68d3ed8ef;
    classtype:trojan-activity;
    sid:2014116; rev:5;
    metadata:affected_product Any, attack_target Client_Endpoint, created_at 2012_01_12, deployment Perimeter, confidence High, signature_severity Major, tag User_Agent, updated_at 2020_10_15;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.