ET RETIRED Suspected TA399/SideWinder Phishing Activity - Landing Page URI Pattern

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/";
content:!"/"; distance:0;
content:"-"; within:25; bsize:<33;
pcre:"/^\/[a-zA-Z0-9]{1,25}\-[a-f0-9]{8}$/";
http.header_names;
content:!"|0d 0a|Referer|0d 0a|";
http.header;
content:"Sec-Fetch-Dest|3a 20|document|0d|"; fast_pattern;
Raw source ET RETIRED Suspected TA399/SideWinder Phishing Activity - Landing Page URI Pattern · 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 -> $EXTERNAL_NET any (
    msg:"ET RETIRED Suspected TA399/SideWinder Phishing Activity - Landing Page URI Pattern";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/";
    content:!"/"; distance:0;
    content:"-"; within:25; bsize:<33;
    pcre:"/^\/[a-zA-Z0-9]{1,25}\-[a-f0-9]{8}$/";
    http.header_names;
    content:!"|0d 0a|Referer|0d 0a|";
    http.header;
    content:"Sec-Fetch-Dest|3a 20|document|0d|"; fast_pattern;
    reference:url,blog.group-ib.com/sidewinder-antibot;
    reference:url,mp.weixin.qq.com/s/Kkta59k7r81uIBjJvE9pCw;
    classtype:targeted-activity;
    sid:2036785; rev:3;
    metadata:attack_target Client_and_Server, created_at 2022_06_02, deployment Perimeter, deployment SSLDecrypt, former_category MALWARE, malware_family Sidewinder, performance_impact Low, confidence Low, signature_severity Major, tag TA399, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_10_23, reviewed_at 2024_09_16;
)

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