ET MALWARE MacOS/Adload CnC Beacon

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/a/rep"; bsize:6; fast_pattern;
http.host;
content:"m."; startswith;
http.user_agent;
content:"|20 28|unknown|20|version|29 20|CFNetwork|2f|";
http.content_type;
content:"charset=utf-8"; bsize:13;
http.request_body;
content:"smc"; startswith;
content:"$"; distance:7; within:1;
isdataat:200,relative;
threshold:type limit, count 1, seconds 600, track by_dst;
Raw source ET MALWARE MacOS/Adload CnC Beacon · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE MacOS/Adload CnC Beacon";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/a/rep"; bsize:6; fast_pattern;
    http.host;
    content:"m."; startswith;
    http.user_agent;
    content:"|20 28|unknown|20|version|29 20|CFNetwork|2f|";
    http.content_type;
    content:"charset=utf-8"; bsize:13;
    http.request_body;
    content:"smc"; startswith;
    content:"$"; distance:7; within:1;
    isdataat:200,relative;
    threshold:type limit, count 1, seconds 600, track by_dst;
    reference:url,cybersecurity.att.com/blogs/labs-research/mac-systems-turned-into-proxy-exit-nodes-by-adload;
    classtype:trojan-activity;
    sid:2047628; rev:2;
    metadata:affected_product Mac_OSX, attack_target Client_Endpoint, created_at 2023_08_11, deployment Perimeter, malware_family Adload, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_08_28;
)

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