ET MALWARE Link Implant CnC Activity (POST)

Query · suricata

flow:established,to_server;
http.request_line;
content:"POST /static/";
http.cookie;
content:"banner=banner"; fast_pattern; bsize:13;
http.header;
content:"x-request-id|3a 20|"; startswith;
http.header_names;
content:!"Referer";
Raw source ET MALWARE Link Implant CnC Activity (POST) · 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 Link Implant CnC Activity (POST)";
    flow:established,to_server;
    http.request_line;
    content:"POST /static/";
    http.cookie;
    content:"banner=banner"; fast_pattern; bsize:13;
    http.header;
    content:"x-request-id|3a 20|"; startswith;
    http.header_names;
    content:!"Referer";
    reference:url,github.com/postrequest/link;
    classtype:command-and-control;
    sid:2037930; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_08_04, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_04;
)

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