ET MALWARE DADJOKE/Rail Tycoon Payload Execution

Query · suricata

flow:to_server,established;
http.method;
content:"GET";
http.uri;
content:"/index.html?a=run"; endswith;
http.user_agent;
content:"Mozilla/4.0 (compatible|3b 20|Win32|3b 20|WinHttp.WinHttpRequest.5)";
http.host;
pcre:"/^(?:\d{1,3}\.){3}\d{1,3}$/";
http.header_names;
content:"|0d 0a|Connection|0d 0a|Accept|0d 0a|User-Agent|0d 0a|Host|0d 0a 0d 0a|";
Raw source ET MALWARE DADJOKE/Rail Tycoon Payload Execution · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE DADJOKE/Rail Tycoon Payload Execution";
    flow:to_server,established;
    http.method;
    content:"GET";
    http.uri;
    content:"/index.html?a=run"; endswith;
    http.user_agent;
    content:"Mozilla/4.0 (compatible|3b 20|Win32|3b 20|WinHttp.WinHttpRequest.5)";
    http.host;
    pcre:"/^(?:\d{1,3}\.){3}\d{1,3}$/";
    http.header_names;
    content:"|0d 0a|Connection|0d 0a|Accept|0d 0a|User-Agent|0d 0a|Host|0d 0a 0d 0a|";
    reference:md5,4c89d5d8016581060d9781433cfb0bb5;
    classtype:command-and-control;
    sid:2028965; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_11_12, deployment Perimeter, malware_family APT_40, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_21;
)

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