ET MALWARE Observed TA399/SideWinder User-Agent

Query · suricata

flow:established,to_server;
http.user_agent;
content:"Mozilla/4.0 (compatible|3b 20|Win32|3b 20|WinHttp.WinHttpRequest.56)"; bsize:58;
Raw source ET MALWARE Observed TA399/SideWinder User-Agent · 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 Observed TA399/SideWinder User-Agent";
    flow:established,to_server;
    http.user_agent;
    content:"Mozilla/4.0 (compatible|3b 20|Win32|3b 20|WinHttp.WinHttpRequest.56)"; bsize:58;
    reference:url,medium.com/@Sebdraven/apt-sidewinder-complicates-theirs-malwares-4e15683e7e26;
    classtype:trojan-activity;
    sid:2029825; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_04_07, deployment Perimeter, malware_family Sidewinder, confidence High, signature_severity Major, tag TA399, updated_at 2020_04_07;
)

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