ET POLICY Tunneled RDP Handshake

Query · suricata

flow:established;
content:"|c0 00|Duca"; depth:250;
content:"rdpdr";
content:"cliprdr";
Raw source ET POLICY Tunneled RDP Handshake · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp any [21,22,23,25,53,80,443,8080] -> any !3389 (
    msg:"ET POLICY Tunneled RDP Handshake";
    flow:established;
    content:"|c0 00|Duca"; depth:250;
    content:"rdpdr";
    content:"cliprdr";
    reference:url,www.fireeye.com/blog/threat-research/2019/01/bypassing-network-restrictions-through-rdp-tunneling.html;
    classtype:bad-unknown;
    sid:2027193; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_04_11, deployment Perimeter, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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.