ET MALWARE Possible iKittens OSX MacDownloader CNC Beacon

Query · suricata

flow:established,to_server;
urilen:14;
http.method;
content:"GET";
http.uri;
content:"/Servermac.php"; depth:14; fast_pattern;
http.header_names;
content:!"Referer|0d 0a|";
Raw source ET MALWARE Possible iKittens OSX MacDownloader CNC Beacon · Suricata
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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 Possible iKittens OSX MacDownloader CNC Beacon";
    flow:established,to_server;
    urilen:14;
    http.method;
    content:"GET";
    http.uri;
    content:"/Servermac.php"; depth:14; fast_pattern;
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:url,iranthreats.github.io/resources/macdownloader-macos-malware/;
    classtype:command-and-control;
    sid:2023876; rev:3;
    metadata:affected_product Mac_OSX, attack_target Client_Endpoint, created_at 2017_02_07, deployment Perimeter, malware_family MacDownloader, confidence Medium, signature_severity Major, tag c2, updated_at 2020_08_04, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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