ET MALWARE Dooptroop CnC Beacon

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".php?num="; fast_pattern;
content:"&rev="; distance:0;
pcre:"/^\/[a-z]+\.php\?num=\d+&rev=/";
http.header_names;
content:!"Referer";
Raw source ET MALWARE Dooptroop CnC Beacon · 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 Dooptroop CnC Beacon";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".php?num="; fast_pattern;
    content:"&rev="; distance:0;
    pcre:"/^\/[a-z]+\.php\?num=\d+&rev=/";
    http.header_names;
    content:!"Referer";
    reference:url,blog.eset.com/2012/03/17/drive-by-ftp-a-new-view-of-cve-2011-3544;
    classtype:command-and-control;
    sid:2014112; rev:6;
    metadata:attack_target Client_Endpoint, created_at 2012_01_10, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_08_18, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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