ET MALWARE SIDESHOW CnC Authentication Over HTTP

Query · suricata

flow:established,to_server;
http.uri;
content:"1"; startswith;
content:"=pAJ9dk4OVq85jxKWoNfw1AG2C&"; distance:0; fast_pattern;
content:"="; distance:0;
pcre:"/[0-9a-f]{16}$/Ri";
Raw source ET MALWARE SIDESHOW CnC Authentication Over HTTP · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE SIDESHOW CnC Authentication Over HTTP";
    flow:established,to_server;
    http.uri;
    content:"1"; startswith;
    content:"=pAJ9dk4OVq85jxKWoNfw1AG2C&"; distance:0; fast_pattern;
    content:"="; distance:0;
    pcre:"/[0-9a-f]{16}$/Ri";
    reference:md5,abd91676a814f4b50ec357ca1584567e;
    reference:url,www.mandiant.com/resources/blog/lightshow-north-korea-unc2970;
    classtype:command-and-control;
    sid:2044600; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_03_14, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_14;
)

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