ET MALWARE APT Related CR4T Dropper Activity M1 (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".dll.xml"; endswith; fast_pattern;
http.user_agent;
pcre:"/^[0-9a-f]{8}-(?:([0-9a-f]{4})\-){3}[0-9a-f]{12}$/";
target:src_ip;
Raw source ET MALWARE APT Related CR4T Dropper Activity M1 (GET) · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE APT Related CR4T Dropper Activity M1 (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".dll.xml"; endswith; fast_pattern;
    http.user_agent;
    pcre:"/^[0-9a-f]{8}-(?:([0-9a-f]{4})\-){3}[0-9a-f]{12}$/";
    reference:url,securelist.com/dunequixote/112425/;
    reference:md5,5a04d9067b8cb6bcb916b59dcf53bed3;
    classtype:trojan-activity;
    sid:2052236; rev:1;
    metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_04_23, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_23;
    target:src_ip;
)

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