ET ADWARE_PUP W32/WinWrapper.Adware Initial Install Beacon

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/api.cgi?act="; fast_pattern;
content:"&appid=";
content:"&ts=";
content:"&dlip=";
content:"&dlid=";
content:"&proto=";
http.user_agent;
content:"NSIS_Inetc (Mozilla)"; depth:20;
http.header_names;
content:!"Referer";
Raw source ET ADWARE_PUP W32/WinWrapper.Adware Initial Install Beacon · Suricata
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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/WinWrapper.Adware Initial Install Beacon";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/api.cgi?act="; fast_pattern;
    content:"&appid=";
    content:"&ts=";
    content:"&dlip=";
    content:"&dlid=";
    content:"&proto=";
    http.user_agent;
    content:"NSIS_Inetc (Mozilla)"; depth:20;
    http.header_names;
    content:!"Referer";
    reference:md5,2d71e44c02784d579fb4af18bbbeae6c;
    classtype:pup-activity;
    sid:2020627; rev:7;
    metadata:attack_target Client_Endpoint, created_at 2015_03_06, 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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