ET MALWARE W32/Echmark/MarkiRAT CnC Response

Query · suricata

flow:established,to_server;
content:"|0d 0a 0d 0a|ci="; fast_pattern;
http.method;
content:"POST";
http.uri;
content:"/rite.php";
http.user_agent;
content:"WinHTTP"; depth:7; endswith;
http.request_body;
content:"ci="; depth:3;
content:"&r="; distance:0;
Raw source ET MALWARE W32/Echmark/MarkiRAT CnC Response · 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 W32/Echmark/MarkiRAT CnC Response";
    flow:established,to_server;
    content:"|0d 0a 0d 0a|ci="; fast_pattern;
    http.method;
    content:"POST";
    http.uri;
    content:"/rite.php";
    http.user_agent;
    content:"WinHTTP"; depth:7; endswith;
    http.request_body;
    content:"ci="; depth:3;
    content:"&r="; distance:0;
    reference:md5,d22d9ce61e6aea72aa9a8a233530db43;
    reference:url,securelist.com/ferocious-kitten-6-years-of-covert-surveillance-in-iran/102806/;
    classtype:trojan-activity;
    sid:2033402; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_07_06, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_07_06;
)

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