GPL NETBIOS SMB NT Trans NT CREATE andx oversized Security Descriptor attempt

Query · suricata

flow:established,to_server;
content:"|00|"; depth:1;
content:"|FF|SMB"; within:4; distance:3;
pcre:"/^(\x75|\x2d|\x2f|\x73|\xa2|\x2e|\x24|\x74)/sR";
byte_test:1,!&,128,6,relative;
content:"|A0|"; depth:1; offset:39;
byte_jump:2,0,little,relative;
content:"|01 00|"; within:2; distance:37;
byte_jump:4,-15,little,relative,from_beginning;
byte_test:4,>,1024,40,relative,little;
Raw source GPL NETBIOS SMB NT Trans NT CREATE andx 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 andx oversized Security Descriptor attempt";
    flow:established,to_server;
    content:"|00|"; depth:1;
    content:"|FF|SMB"; within:4; distance:3;
    pcre:"/^(\x75|\x2d|\x2f|\x73|\xa2|\x2e|\x24|\x74)/sR";
    byte_test:1,!&,128,6,relative;
    content:"|A0|"; depth:1; offset:39;
    byte_jump:2,0,little,relative;
    content:"|01 00|"; within:2; distance:37;
    byte_jump:4,-15,little,relative,from_beginning;
    byte_test:4,>,1024,40,relative,little;
    reference:cve,2004-1154;
    classtype:protocol-command-decode;
    sid:2103019; 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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