ET ADWARE_PUP W32/PullUpdate.Adware CnC Beacon

Query · suricata

flow:established,to_server;
urilen:7;
http.method;
content:"POST";
http.uri;
content:"?v="; fast_pattern;
pcre:"/^\/[a-z]{2}\x3Fv\x3D[0-9]$/";
http.header_names;
content:!"Referer";
content:!"Accept";
content:!"User-Agent";
Raw source ET ADWARE_PUP W32/PullUpdate.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 -> $EXTERNAL_NET any (
    msg:"ET ADWARE_PUP W32/PullUpdate.Adware CnC Beacon";
    flow:established,to_server;
    urilen:7;
    http.method;
    content:"POST";
    http.uri;
    content:"?v="; fast_pattern;
    pcre:"/^\/[a-z]{2}\x3Fv\x3D[0-9]$/";
    http.header_names;
    content:!"Referer";
    content:!"Accept";
    content:!"User-Agent";
    reference:md5,129563c2ab034af094422db408d7d74f;
    classtype:pup-activity;
    sid:2018368; rev:7;
    metadata:attack_target Client_Endpoint, created_at 2014_04_07, deployment Perimeter, signature_severity Minor, tag c2, updated_at 2020_08_31, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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