ET MALWARE Suspected Muggle Stealer Activity M1

Query · suricata

flow:established,to_server;
http.host;
pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/";
http.uri;
content:"/upload/"; startswith;
pcre:"/^[a-zA-Z0-9]{5,12}\//R";
content:"Wincredsruntime"; fast_pattern; endswith; distance:0;
http.header_names;
content:!"|0d 0a|Referer|0d 0a|";
target:src_ip;
Raw source ET MALWARE Suspected Muggle Stealer Activity M1 · 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 -> $EXTERNAL_NET 1024: (
    msg:"ET MALWARE Suspected Muggle Stealer Activity M1";
    flow:established,to_server;
    http.host;
    pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/";
    http.uri;
    content:"/upload/"; startswith;
    pcre:"/^[a-zA-Z0-9]{5,12}\//R";
    content:"Wincredsruntime"; fast_pattern; endswith; distance:0;
    http.header_names;
    content:!"|0d 0a|Referer|0d 0a|";
    reference:md5,c8ed60d1f24a7119612cd5bde0ddc1e1;
    reference:url,twitter.com/suyog41/status/1638865731550085120;
    classtype:trojan-activity;
    sid:2044768; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_03_27, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_27;
    target:src_ip;
)

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