ET MALWARE KPOT Stealer Initial CnC Activity M5

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/api.php?id="; fast_pattern;
pcre:"/^[A-F0-9]+$/Rsi";
http.content_type;
content:"application/x-www-form-urlencoded"; bsize:33;
http.header_names;
content:!"Referer";
Raw source ET MALWARE KPOT Stealer Initial CnC Activity M5 · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE KPOT Stealer Initial CnC Activity M5";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/api.php?id="; fast_pattern;
    pcre:"/^[A-F0-9]+$/Rsi";
    http.content_type;
    content:"application/x-www-form-urlencoded"; bsize:33;
    http.header_names;
    content:!"Referer";
    reference:md5,1ea7d46d94299fa8bad4043c13100df0;
    classtype:command-and-control;
    sid:2033397; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_07_23, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_23;
)

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