ET MALWARE Darkness DDoS Common Intial Check-in Response wtf

Query · suricata

flow:from_server,established;
file_data;
content:"d3Rm"; within:4;
pcre:"/^(?:\r\n|$)/R";
Raw source ET MALWARE Darkness DDoS Common Intial Check-in Response wtf · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Darkness DDoS Common Intial Check-in Response wtf";
    flow:from_server,established;
    file_data;
    content:"d3Rm"; within:4;
    pcre:"/^(?:\r\n|$)/R";
    reference:md5,a9af388f5a627aa66c34074ef45db1b7;
    classtype:trojan-activity;
    sid:2017776; rev:7;
    metadata:created_at 2013_11_27, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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