GPL NETBIOS SMB winreg unicode create tree attempt

Query · suricata

flow:established,to_server;
flowbits:isset,smb.tree.connect.ipc;
content:"|00|"; depth:1;
content:"|FF|SMB|A2|"; within:5; distance:3;
byte_test:1,&,128,6,relative;
content:"|5C 00|w|00|i|00|n|00|r|00|e|00|g|00 00 00|"; within:16; distance:78; nocase;
flowbits:set,smb.tree.create.winreg;

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

Feeds into

  • 8 rules read smb.tree.create.winreg · view all
Raw source GPL NETBIOS SMB winreg unicode create tree 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 winreg unicode create tree attempt";
    flow:established,to_server;
    flowbits:isset,smb.tree.connect.ipc;
    content:"|00|"; depth:1;
    content:"|FF|SMB|A2|"; within:5; distance:3;
    byte_test:1,&,128,6,relative;
    content:"|5C 00|w|00|i|00|n|00|r|00|e|00|g|00 00 00|"; within:16; distance:78; nocase;
    flowbits:set,smb.tree.create.winreg;
    classtype:protocol-command-decode;
    sid:2102175; rev:10;
    metadata:created_at 2010_09_23, signature_severity Informational, updated_at 2019_07_26;
)

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