ET MALWARE FRAT Downloader Activity

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/myO?gId="; startswith; fast_pattern;
http.header_names;
content:"Host|0d 0a|Connection|0d 0a 0d 0a|";
content:!"Referer";
content:!"User-Agent";
content:!"Accept-";
Raw source ET MALWARE FRAT Downloader Activity · 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 FRAT Downloader Activity";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/myO?gId="; startswith; fast_pattern;
    http.header_names;
    content:"Host|0d 0a|Connection|0d 0a 0d 0a|";
    content:!"Referer";
    content:!"User-Agent";
    content:!"Accept-";
    reference:md5,f1638d4cd6286b69cb29d8002478d0c1;
    classtype:trojan-activity;
    sid:2030494; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2020_07_09, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_07_09;
)

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