ET MALWARE MACE C2 Framework Response M2

Query · suricata

flow:established,to_client;
flowbits:isset,ET.maceframework;
http.stat_code;
content:"200";
http.server;
content:"BaseHTTP"; startswith; fast_pattern;
content:"Python/"; distance:0;
http.header;
content:!"Content-Length";
file.data;
pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/";
target:dest_ip;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET MALWARE MACE C2 Framework Response 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 $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE MACE C2 Framework Response M2";
    flow:established,to_client;
    flowbits:isset,ET.maceframework;
    http.stat_code;
    content:"200";
    http.server;
    content:"BaseHTTP"; startswith; fast_pattern;
    content:"Python/"; distance:0;
    http.header;
    content:!"Content-Length";
    file.data;
    pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/";
    reference:url,github.com/nickvangilder/most-average-c2-ever/;
    classtype:trojan-activity;
    sid:2049131; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_11_09, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_11_09;
    target:dest_ip;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.