ET MALWARE DuckTail APT Payload Request

Query · suricata

flow:established,to_server;
http.uri;
content:"/stubs/nt/"; startswith; fast_pattern;
http.host;
pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/";
http.user_agent;
content:"WindowsPowerShell/";
http.header_names;
content:!"|0d 0a|Referer|0d 0a|"; nocase;
Raw source ET MALWARE DuckTail APT Payload Request · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE DuckTail APT Payload Request";
    flow:established,to_server;
    http.uri;
    content:"/stubs/nt/"; startswith; fast_pattern;
    http.host;
    pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/";
    http.user_agent;
    content:"WindowsPowerShell/";
    http.header_names;
    content:!"|0d 0a|Referer|0d 0a|"; nocase;
    reference:url,twitter.com/suyog41/status/1787452543687336087;
    reference:md5,6b18c0bff7be3ea36fa03eb0d52bd088;
    classtype:trojan-activity;
    sid:2052444; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_05_06, deployment Perimeter, malware_family Ducktail, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_05_06;
)

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