GPL NETBIOS SMB NT Trans NT CREATE oversized Security Descriptor attempt

Query · suricata

flow:established,to_server;
content:"|00|"; depth:1;
content:"|FF|SMB|A0|"; within:5; distance:3;
byte_test:1,!&,128,6,relative;
pcre:"/^.{27}/R";
content:"|01 00|"; within:2; distance:37;
byte_jump:4,-15,little,relative,from_beginning;
pcre:"/^.{4}/R";
byte_test:4,>,1024,36,relative,little;
Raw source GPL NETBIOS SMB NT Trans NT CREATE oversized Security Descriptor 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 139 (
    msg:"GPL NETBIOS SMB NT Trans NT CREATE oversized Security Descriptor attempt";
    flow:established,to_server;
    content:"|00|"; depth:1;
    content:"|FF|SMB|A0|"; within:5; distance:3;
    byte_test:1,!&,128,6,relative;
    pcre:"/^.{27}/R";
    content:"|01 00|"; within:2; distance:37;
    byte_jump:4,-15,little,relative,from_beginning;
    pcre:"/^.{4}/R";
    byte_test:4,>,1024,36,relative,little;
    reference:cve,2004-1154;
    classtype:protocol-command-decode;
    sid:2103018; rev:5;
    metadata:created_at 2010_09_23, cve CVE_2004_1154, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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