ET MALWARE Arid Viper APT Related Activity (POST)

Query · suricata

flow:established,to_server;
urilen:40<>60;
http.method;
content:"POST";
http.uri;
content:!".php";
content:!".htm";
content:!".asp";
http.header_names;
content:"|0d 0a|Host|0d 0a|Accept|0d 0a|Content-Length|0d 0a|Content-Type|0d 0a 0d 0a|"; bsize:48;
http.content_type;
content:"multipart/form-data|3b 20|boundary="; startswith;
http.request_body;
content:"|0d 0a|V2luZG93cy"; fast_pattern;
Raw source ET MALWARE Arid Viper APT Related Activity (POST) · 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 Arid Viper APT Related Activity (POST)";
    flow:established,to_server;
    urilen:40<>60;
    http.method;
    content:"POST";
    http.uri;
    content:!".php";
    content:!".htm";
    content:!".asp";
    http.header_names;
    content:"|0d 0a|Host|0d 0a|Accept|0d 0a|Content-Length|0d 0a|Content-Type|0d 0a 0d 0a|"; bsize:48;
    http.content_type;
    content:"multipart/form-data|3b 20|boundary="; startswith;
    http.request_body;
    content:"|0d 0a|V2luZG93cy"; fast_pattern;
    reference:md5,be1217071f0a3f4c552b56dff96dc11c;
    reference:url,twitter.com/Jup1a/status/1579751269828562945;
    classtype:trojan-activity;
    sid:2039171; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_10_12, deployment Perimeter, deployment SSLDecrypt, malware_family AridViper, malware_family TA401, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_12;
)

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