GPL NETBIOS SMB DCERPC LSASS unicode bind attempt


Query · suricata

flow:to_server,established;
content:"|00|"; depth:1;
content:"|FF|SMB%"; depth:5; offset:4; nocase;
byte_test:2,&,1,5,relative;
content:"&|00|"; within:2; distance:56;
content:"|5C 00|P|00|I|00|P|00|E|00 5C 00 05 00 0B|"; within:15; distance:4;
byte_test:1,&,16,1,relative;
content:"j|28 19|9|0C B1 D0 11 9B A8 00 C0|O|D9|.|F5|"; within:16; distance:29;
flowbits:set,netbios.lsass.bind.attempt;
flowbits:noalert;

Rule dependencies

Feeds into

  • 3 rules read netbios.lsass.bind.attempt · view all
Raw source GPL NETBIOS SMB DCERPC LSASS unicode bind 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 DCERPC LSASS unicode bind attempt";
#    flow:to_server,established;
#    content:"|00|"; depth:1;
#    content:"|FF|SMB%"; depth:5; offset:4; nocase;
#    byte_test:2,&,1,5,relative;
#    content:"&|00|"; within:2; distance:56;
#    content:"|5C 00|P|00|I|00|P|00|E|00 5C 00 05 00 0B|"; within:15; distance:4;
#    byte_test:1,&,16,1,relative;
#    content:"j|28 19|9|0C B1 D0 11 9B A8 00 C0|O|D9|.|F5|"; within:16; distance:29;
#    flowbits:set,netbios.lsass.bind.attempt;
#    flowbits:noalert;
#    reference:bugtraq,10108;
#    reference:cve,2003-0533;
#    reference:url,www.microsoft.com/technet/security/bulletin/MS04-011.mspx;
#    classtype:protocol-command-decode;
#    sid:2102509; rev:8;
#    metadata:created_at 2010_09_23, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
#)

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