ET MALWARE MICROPSIA Screenshot Upload M3

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:!".";
content:!"&";
http.request_body;
content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|vcqmxylcv|22|"; fast_pattern;
content:"|0d 0a 0d 0a ff d8 ff e0|";
content:"JFIF"; distance:0; within:40;
Raw source ET MALWARE MICROPSIA Screenshot Upload M3 · Suricata
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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 MICROPSIA Screenshot Upload M3";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:!".";
    content:!"&";
    http.request_body;
    content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|vcqmxylcv|22|"; fast_pattern;
    content:"|0d 0a 0d 0a ff d8 ff e0|";
    content:"JFIF"; distance:0; within:40;
    reference:md5,7833c0f413c1611f7281ac303bcef4b3;
    classtype:command-and-control;
    sid:2032823; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_04_23, deployment Perimeter, malware_family MICROPSIA, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_04_23;
)

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