ET MALWARE OSX/Mokes.A CnC Heartbeat Request (set)

Query · suricata

flow:established,to_server;
urilen:3;
flowbits:set,ET.OSX.Mokes;
flowbits:noalert;
http.method;
content:"GET";
http.uri;
content:"/v1";
http.header;
content:"Safari/7046A194A|0d 0a|"; fast_pattern;
http.connection;
content:"Close"; bsize:5;
http.header_names;
content:"|0d 0a|Connection|0d 0a|User-Agent|0d 0a|Accept-Encoding|0d 0a|Accept-Language|0d 0a|Host|0d 0a 0d 0a|"; startswith;

Rule dependencies

Feeds into

Raw source ET MALWARE OSX/Mokes.A CnC Heartbeat Request (set) · 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 OSX/Mokes.A CnC Heartbeat Request (set)";
    flow:established,to_server;
    urilen:3;
    flowbits:set,ET.OSX.Mokes;
    flowbits:noalert;
    http.method;
    content:"GET";
    http.uri;
    content:"/v1";
    http.header;
    content:"Safari/7046A194A|0d 0a|"; fast_pattern;
    http.connection;
    content:"Close"; bsize:5;
    http.header_names;
    content:"|0d 0a|Connection|0d 0a|User-Agent|0d 0a|Accept-Encoding|0d 0a|Accept-Language|0d 0a|Host|0d 0a 0d 0a|"; startswith;
    reference:url,securelist.com/blog/research/75990/the-missing-piece-sophisticated-os-x-backdoor-discovered;
    classtype:command-and-control;
    sid:2023182; rev:3;
    metadata:affected_product Mac_OSX, created_at 2016_09_08, deployment Perimeter, malware_family OSX_Mokes_A, confidence High, signature_severity Major, tag OSX_Malware, updated_at 2020_07_27;
)

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