ET EXPLOIT Possible Local Active Directory Federation Services (AD FS) Replication Attempt

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/adfs/services/policystoretransfer"; startswith; fast_pattern;
threshold:type limit,track by_src,count 1,seconds 600;
Raw source ET EXPLOIT Possible Local Active Directory Federation Services (AD FS) Replication Attempt · 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 -> $HOME_NET 80 (
    msg:"ET EXPLOIT Possible Local Active Directory Federation Services (AD FS) Replication Attempt";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/adfs/services/policystoretransfer"; startswith; fast_pattern;
    threshold:type limit,track by_src,count 1,seconds 600;
    reference:url,fireeye.com/blog/threat-research/2021/04/abusing-replication-stealing-adfs-secrets-over-the-network.html;
    classtype:web-application-attack;
    sid:2032884; rev:1;
    metadata:attack_target Server, created_at 2021_04_28, deployment Internal, confidence Medium, signature_severity Major, updated_at 2021_04_28;
)

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