ET ADWARE_PUP Win32/DownWare.V Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"av=";
content:"&mac=";
content:"&os="; distance:17; within:4;
content:"&secret="; distance:0; fast_pattern;
content:"&sid=";
pcre:"/^[0-9a-fA-F]{8}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{12}$/R";
Raw source ET ADWARE_PUP Win32/DownWare.V Checkin · 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 -> $EXTERNAL_NET any (
    msg:"ET ADWARE_PUP Win32/DownWare.V Checkin";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"av=";
    content:"&mac=";
    content:"&os="; distance:17; within:4;
    content:"&secret="; distance:0; fast_pattern;
    content:"&sid=";
    pcre:"/^[0-9a-fA-F]{8}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{12}$/R";
    reference:md5,68b8cd6e7905578b21dd2ad02b33648c;
    classtype:pup-activity;
    sid:2034903; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2022_01_12, deployment Perimeter, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_01_12, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1496, mitre_technique_name Resource_Hijacking;
)

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