ET MALWARE W32/Downloader_x.EJK!tr CnC Activity

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.request_body;
content:"VM|3a 20|"; startswith;
content:"|0a|WINDOWS|3a 20|"; distance:0;
content:"|0a|COMPNAME|3a 20|"; distance:0; fast_pattern;
content:"|0a|dhcp|3a 20|"; distance:0;
Raw source ET MALWARE W32/Downloader_x.EJK!tr CnC Activity · 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 W32/Downloader_x.EJK!tr CnC Activity";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.request_body;
    content:"VM|3a 20|"; startswith;
    content:"|0a|WINDOWS|3a 20|"; distance:0;
    content:"|0a|COMPNAME|3a 20|"; distance:0; fast_pattern;
    content:"|0a|dhcp|3a 20|"; distance:0;
    reference:md5,0241deba165817083c66fae17e09d68f;
    classtype:command-and-control;
    sid:2030797; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_08_26, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_26;
)

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