GPL NETBIOS SMB-DS DCEPRC ORPCThis request flood attempt

Query · suricata

flow:to_server,established;
content:"|05|"; depth:1;
content:"|00|"; within:1; distance:1;
byte_test:1,&,1,0,relative;
content:"|05|"; within:1; distance:21;
content:"MEOW";
flowbits:isset,dce.isystemactivator.bind.call.attempt;
threshold:type both, track by_dst, count 20, seconds 60;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source GPL NETBIOS SMB-DS DCEPRC ORPCThis request flood attempt · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $EXTERNAL_NET any -> $HOME_NET 445 (
    msg:"GPL NETBIOS SMB-DS DCEPRC ORPCThis request flood attempt";
    flow:to_server,established;
    content:"|05|"; depth:1;
    content:"|00|"; within:1; distance:1;
    byte_test:1,&,1,0,relative;
    content:"|05|"; within:1; distance:21;
    content:"MEOW";
    flowbits:isset,dce.isystemactivator.bind.call.attempt;
    threshold:type both, track by_dst, count 20, seconds 60;
    reference:bugtraq,8811;
    reference:cve,2003-0813;
    reference:nessus,12206;
    reference:url,www.microsoft.com/technet/security/bulletin/MS04-011.mspx;
    classtype:misc-attack;
    sid:2102496; rev:9;
    metadata:created_at 2010_09_23, cve CVE_2003_0813, confidence Medium, signature_severity Informational, updated_at 2019_07_26;
)

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