ET MALWARE APT LuckyMouse Polpo Malware CnC

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".cgi/?SSID="; fast_pattern;
pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/R";
http.header_names;
content:!"User-Agent";
content:!"Referer";
Raw source ET MALWARE APT LuckyMouse Polpo Malware CnC · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE APT LuckyMouse Polpo Malware CnC";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".cgi/?SSID="; fast_pattern;
    pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/R";
    http.header_names;
    content:!"User-Agent";
    content:!"Referer";
    reference:url,decoded.avast.io/luigicamastra/apt-group-targeting-governmental-agencies-in-east-asia/;
    classtype:command-and-control;
    sid:2031314; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2020_12_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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