ET MALWARE WasabiSeed Backdoor Payload Request (GET)

Query · suricata

flow:established,to_server;
urilen:<13;
http.method;
content:"GET";
http.uri;
pcre:"/^\/-?[0-9]{8,10}$/";
http.user_agent;
content:"Windows Installer"; bsize:17; fast_pattern;
Raw source ET MALWARE WasabiSeed Backdoor Payload Request (GET) · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE WasabiSeed Backdoor Payload Request (GET)";
    flow:established,to_server;
    urilen:<13;
    http.method;
    content:"GET";
    http.uri;
    pcre:"/^\/-?[0-9]{8,10}$/";
    http.user_agent;
    content:"Windows Installer"; bsize:17; fast_pattern;
    reference:url,twitter.com/Unit42_Intel/status/1608567622856998912;
    classtype:trojan-activity;
    sid:2043239; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_01_09, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_21, reviewed_at 2025_10_24;
)

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