ET MALWARE W32/Asprox.ClickFraudBot POST CnC Beacon

Query · suricata

flow:established,to_server;
urilen:<33;
http.method;
content:"POST";
http.uri;
content:"/b/"; fast_pattern;
pcre:"/^[a-z]{3,4}\x2F[a-f0-9]{24}$/Ri";
Raw source ET MALWARE W32/Asprox.ClickFraudBot POST 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE W32/Asprox.ClickFraudBot POST CnC Beacon";
    flow:established,to_server;
    urilen:<33;
    http.method;
    content:"POST";
    http.uri;
    content:"/b/"; fast_pattern;
    pcre:"/^[a-z]{3,4}\x2F[a-f0-9]{24}$/Ri";
    reference:url,research.zscaler.com/2014/02/new-zbot-variant-goes-above-and-beyond.html;
    reference:url,techhelplist.com/index.php/tech-tutorials/41-misc/465-asprox-botnet-advertising-fraud-general-overview-1;
    reference:md5,df5ab239bdf09a8716cabbdfa1d6a724;
    classtype:command-and-control;
    sid:2018098; rev:5;
    metadata:attack_target Client_Endpoint, created_at 2014_02_10, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_08_17, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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