ET MALWARE Kimsuky Related Maldoc Activity (HEAD)

Query · suricata

flow:established,to_server;
http.method;
content:"HEAD";
http.uri;
content:".dotm?q=6"; endswith; fast_pattern;
http.user_agent;
content:"Office";
http.header_names;
content:!"Accept";
content:!"Referer";
Raw source ET MALWARE Kimsuky Related Maldoc Activity (HEAD) · 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 Kimsuky Related Maldoc Activity (HEAD)";
    flow:established,to_server;
    http.method;
    content:"HEAD";
    http.uri;
    content:".dotm?q=6"; endswith; fast_pattern;
    http.user_agent;
    content:"Office";
    http.header_names;
    content:!"Accept";
    content:!"Referer";
    reference:md5,a9b6cf8d8d0a67da4eea269dab16fe99;
    reference:url,mp.weixin.qq.com/s/og8mfnqoKZsHlOJdIDKYgQ;
    classtype:trojan-activity;
    sid:2033598; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_07_28, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_28;
)

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