ET ADWARE_PUP W32/RocketfuelNextUp.Adware CnC Beacon

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/evt/?nexcb="; startswith; fast_pattern;
pcre:"/^\x2Fevt\x2F\x3Fnexcb\x3D[a-f0-9\x2D]{10,}$/";
http.request_body;
content:"a="; depth:2;
content:"&b="; distance:0;
http.header_names;
content:!"User-Agent|0d 0a|";
Raw source ET ADWARE_PUP W32/RocketfuelNextUp.Adware 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 -> $EXTERNAL_NET any (
    msg:"ET ADWARE_PUP W32/RocketfuelNextUp.Adware CnC Beacon";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/evt/?nexcb="; startswith; fast_pattern;
    pcre:"/^\x2Fevt\x2F\x3Fnexcb\x3D[a-f0-9\x2D]{10,}$/";
    http.request_body;
    content:"a="; depth:2;
    content:"&b="; distance:0;
    http.header_names;
    content:!"User-Agent|0d 0a|";
    reference:md5,408e8969cd0abd153eab6696f8add363;
    classtype:pup-activity;
    sid:2018565; rev:6;
    metadata:attack_target Client_Endpoint, created_at 2014_06_16, deployment Perimeter, signature_severity Minor, tag c2, updated_at 2020_10_12, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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