ET MALWARE MirrorBlast KiXtart Downloader Client Request M2

Query · suricata

flow:established,to_server;
http.request_line;
content:"GET /?data="; startswith; fast_pattern;
content:!"="; distance:0;
content:"|3a|"; within:17;
content:"|3a|"; distance:0;
isdataat:!261;
http.header_names;
content:"|0d 0a|Accept|0d 0a|"; startswith;
content:"|0d 0a|Accept-Encoding|0d 0a|User-Agent|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; endswith;
content:!"|0d 0a|Referer|0d 0a|";
Raw source ET MALWARE MirrorBlast KiXtart Downloader Client Request M2 · 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 MirrorBlast KiXtart Downloader Client Request M2";
    flow:established,to_server;
    http.request_line;
    content:"GET /?data="; startswith; fast_pattern;
    content:!"="; distance:0;
    content:"|3a|"; within:17;
    content:"|3a|"; distance:0;
    isdataat:!261;
    http.header_names;
    content:"|0d 0a|Accept|0d 0a|"; startswith;
    content:"|0d 0a|Accept-Encoding|0d 0a|User-Agent|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; endswith;
    content:!"|0d 0a|Referer|0d 0a|";
    reference:md5,8b6199f5d5465c327c8c30ac9fdfd23a;
    classtype:command-and-control;
    sid:2034136; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_10_06, deployment Perimeter, malware_family MirrorBlast, performance_impact Moderate, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_10_06;
)

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