ET PHISHING TA397/Bitter CnC Activity

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php"; endswith;
http.request_body;
content:"aat|3d|"; startswith;
content:"bat|3d|";
content:"cat|3d|Microsoft|2b|Windows|2b|"; fast_pattern;
content:"dat|3d|";
target:dest_ip;
Raw source ET PHISHING TA397/Bitter CnC Activity · 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 PHISHING TA397/Bitter CnC Activity";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.request_body;
    content:"aat|3d|"; startswith;
    content:"bat|3d|";
    content:"cat|3d|Microsoft|2b|Windows|2b|"; fast_pattern;
    content:"dat|3d|";
    reference:md5,f16f2e4317c37085cad630d41001f7c3;
    classtype:social-engineering;
    sid:2066319; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Mac_OSX, affected_product Linux, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_12_15, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, tag TA397, updated_at 2025_12_15;
    target:dest_ip;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.