ET MALWARE ZuoRAT Windows Loader Shellcode Retrieval

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/api/docs/share/"; startswith;
pcre:"/^[a-f0-9]{8}-(?:[a-f0-9]{4}-){3}[a-f0-9]{12}/";
content:"doc_slug="; fast_pattern;
content:"from=";
Raw source ET MALWARE ZuoRAT Windows Loader Shellcode Retrieval · 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 ZuoRAT Windows Loader Shellcode Retrieval";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/api/docs/share/"; startswith;
    pcre:"/^[a-f0-9]{8}-(?:[a-f0-9]{4}-){3}[a-f0-9]{12}/";
    content:"doc_slug="; fast_pattern;
    content:"from=";
    reference:url,github.com/blacklotuslabs/IOCs/blob/main/ZuoRAT_IoCs.txt;
    classtype:targeted-activity;
    sid:2037142; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_06_28, deployment Perimeter, deployment SSLDecrypt, malware_family ZuoRAT, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_06_28;
)

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