ET SCAN RDP Connection Attempt from Nmap

Query · suricata

flow:established,to_server;
content:"|00 00 00 00 00|Cookie|3a 20|mstshash|3d|nmap|0d 0a|"; fast_pattern;
Raw source ET SCAN RDP Connection Attempt from Nmap · 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 tcp any any -> any 3389 (
    msg:"ET SCAN RDP Connection Attempt from Nmap";
    flow:established,to_server;
    content:"|00 00 00 00 00|Cookie|3a 20|mstshash|3d|nmap|0d 0a|"; fast_pattern;
    reference:url,github.com/nmap/nmap/blob/4b46fa7097673f157e7b93e72f0c8b3249c54b4c/nselib/rdp.lua#L211;
    classtype:network-scan;
    sid:2036252; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2022_04_19, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_19;
)

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