GPL NETBIOS SMB-DS D$ unicode andx share access

Query · suricata

flow:established,to_server;
content:"|00|"; depth:1;
content:"|FF|SMB"; within:4; distance:3;
pcre:"/^(\x2d|\x2f|\x73|\xa2|\x2e|\x24|\x74)/sR";
byte_test:1,&,128,6,relative;
content:"u"; depth:1; offset:39;
byte_jump:2,0,little,relative;
byte_jump:2,7,little,relative;
content:"D|00 24 00 00 00|"; distance:2; nocase;
Raw source GPL NETBIOS SMB-DS D$ unicode andx share access · 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 -> $HOME_NET 445 (
    msg:"GPL NETBIOS SMB-DS D$ unicode andx share access";
    flow:established,to_server;
    content:"|00|"; depth:1;
    content:"|FF|SMB"; within:4; distance:3;
    pcre:"/^(\x2d|\x2f|\x73|\xa2|\x2e|\x24|\x74)/sR";
    byte_test:1,&,128,6,relative;
    content:"u"; depth:1; offset:39;
    byte_jump:2,0,little,relative;
    byte_jump:2,7,little,relative;
    content:"D|00 24 00 00 00|"; distance:2; nocase;
    classtype:protocol-command-decode;
    sid:2102975; rev:4;
    metadata:created_at 2010_09_23, confidence Medium, signature_severity Informational, updated_at 2019_07_26;
)

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