ET MALWARE Gamaredon Style MalDoc .dot Download on freedynamicdns .org

Query · suricata

flow:established,to_server;
http.method;
content:"HEAD";
http.uri;
content:".dot"; endswith;
pcre:"/\/[A-Za-z]{4,9}\.dot$/";
http.host;
content:".freedynamicdns.org"; endswith; fast_pattern;
Raw source ET MALWARE Gamaredon Style MalDoc .dot Download on freedynamicdns .org · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Gamaredon Style MalDoc .dot Download on freedynamicdns .org";
    flow:established,to_server;
    http.method;
    content:"HEAD";
    http.uri;
    content:".dot"; endswith;
    pcre:"/\/[A-Za-z]{4,9}\.dot$/";
    http.host;
    content:".freedynamicdns.org"; endswith; fast_pattern;
    reference:md5,2180fa8e767676a6802cf3d5d23ea6de;
    classtype:trojan-activity;
    sid:2030232; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_06_01, deployment Perimeter, confidence High, signature_severity Major, updated_at 2020_06_01;
)

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