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Rev: 4 • Sep 23, 2010, 12:00 PMGPL NETBIOS SMB CoGetInstanceFromFile little endian attempt
alert tcp $EXTERNAL_NET any -> $HOME_NET 139 (msg:"GPL NETBIOS SMB CoGetInstanceFromFile little endian attempt"; flow:established,to_server; flowbits:isset,dce.isystemactivator.bind; content:"|00|"; depth:1; content:"|FF|SMB%"; within:5; distance:3; byte_test:1,!&,128,6,relative; content:"&|00|"; within:2; distance:56; content:"|5C|PIPE|5C 00|"; distance:4; nocase; byte_jump:2,-17,relative,from_beginning,little; isdataat:4,relative; content:"|05|"; byte_test:1,&,16,3,relative; content:"|00|"; within:1; distance:1; content:"|04 00|"; within:2; distance:19; content:"|5C 5C|"; byte_test:4,>,256,6,little; classtype:protocol-command-decode; sid:2103426; rev:4; metadata:created_at 2010_09_23, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)
Sep 23, 2010, 12:00 PM
Jul 26, 2019, 12:00 PM
Sep 21, 2024, 3:00 AM
Oct 6, 2025, 9:38 PM
rules/emerging-netbios.rules