ET MALWARE MontysThree HTTPTransport Module Activity

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php?id=";
pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/R";
http.header;
content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|image|22 3b 20|filename=|22|image.jpg|22|"; fast_pattern;
http.header_names;
content:!"Referer";
Raw source ET MALWARE MontysThree HTTPTransport Module Activity · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE MontysThree HTTPTransport Module Activity";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php?id=";
    pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/R";
    http.header;
    content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|image|22 3b 20|filename=|22|image.jpg|22|"; fast_pattern;
    http.header_names;
    content:!"Referer";
    reference:md5,1f0461dba1aefdd124f8333afe7f5982;
    reference:url,twitter.com/Int2e_/status/1314479575523446784;
    classtype:trojan-activity;
    sid:2030994; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2020_10_09, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_12_10;
)

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