ET HUNTING Base64 Encoded ipconfig sent via HTTP URI M1

Query · suricata

flow:established,to_server;
http.uri;
content:"V2luZG93cyBJUCBDb25maWd1cmF0aW9u"; fast_pattern;
pcre:"/(?:Q29ubmVjdGlvbi1zcGVjaWZpYyBETlMgU3VmZml4|Nvbm5lY3Rpb24tc3BlY2lmaWMgRE5TIFN1ZmZpe|Db25uZWN0aW9uLXNwZWNpZmljIEROUyBTdWZmaX)/R";
Raw source ET HUNTING Base64 Encoded ipconfig sent via HTTP URI M1 · 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 HUNTING Base64 Encoded ipconfig sent via HTTP URI M1";
    flow:established,to_server;
    http.uri;
    content:"V2luZG93cyBJUCBDb25maWd1cmF0aW9u"; fast_pattern;
    pcre:"/(?:Q29ubmVjdGlvbi1zcGVjaWZpYyBETlMgU3VmZml4|Nvbm5lY3Rpb24tc3BlY2lmaWMgRE5TIFN1ZmZpe|Db25uZWN0aW9uLXNwZWNpZmljIEROUyBTdWZmaX)/R";
    reference:md5,1df312629294f2de70a335a751a13a28;
    classtype:unknown;
    sid:2036566; rev:1;
    metadata:attack_target Client_and_Server, created_at 2022_05_12, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_05_12;
)

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