ET MALWARE Possible Dragonfly APT Activity HTTP URI OPTIONS

Query · suricata

flow:established,to_server;
http.method;
content:"OPTIONS";
http.uri;
content:"/ame_icon.png"; fast_pattern; endswith;
Raw source ET MALWARE Possible Dragonfly APT Activity HTTP URI OPTIONS · 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 MALWARE Possible Dragonfly APT Activity HTTP URI OPTIONS";
    flow:established,to_server;
    http.method;
    content:"OPTIONS";
    http.uri;
    content:"/ame_icon.png"; fast_pattern; endswith;
    reference:url,www.us-cert.gov/ncas/alerts/TA17-293A;
    reference:url,www.us-cert.gov/sites/default/files/publications/MIFR-10128883_TLP_WHITE.pdf;
    classtype:targeted-activity;
    sid:2024899; rev:3;
    metadata:attack_target Client_Endpoint, created_at 2017_10_23, deployment Perimeter, confidence Medium, signature_severity Major, updated_at 2020_09_14;
)

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