ET DOS SMBLoris NBSS Length Mem Exhaustion Attempt (PoC Based)

Query · suricata

flow:established,to_server;
content:"|00 01 ff ff|"; depth:4;
threshold:type both,track by_dst,count 30, seconds 300;
Raw source ET DOS SMBLoris NBSS Length Mem Exhaustion Attempt (PoC Based) · 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 any -> $HOME_NET [139,445] (
    msg:"ET DOS SMBLoris NBSS Length Mem Exhaustion Attempt (PoC Based)";
    flow:established,to_server;
    content:"|00 01 ff ff|"; depth:4;
    threshold:type both,track by_dst,count 30, seconds 300;
    reference:url,isc.sans.edu/forums/diary/SMBLoris+the+new+SMB+flaw/22662/;
    classtype:trojan-activity;
    sid:2024511; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2017_08_02, deployment Internal, performance_impact Significant, confidence High, signature_severity Major, updated_at 2019_07_26;
)

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