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Rev: 6 • Sep 23, 2010, 12:00 PMGPL NETBIOS SMB InitiateSystemShutdown unicode little endian attempt
alert tcp $EXTERNAL_NET any -> $HOME_NET 139 (msg:"GPL NETBIOS SMB InitiateSystemShutdown unicode little endian attempt"; flow:established,to_server; flowbits:isset,smb.tree.bind.winreg; 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 00|P|00|I|00|P|00|E|00 5C 00 00 00|"; distance:4; nocase; byte_jump:2,-10,relative,from_beginning; content:"|05|"; distance:4; within:1; byte_test:1,!&,16,3,relative; content:"|00|"; within:1; distance:1; content:"|18 00|"; within:2; distance:19; classtype:protocol-command-decode; sid:2102945; rev:6; 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
Nov 4, 2025, 10:34 PM
rules/emerging-netbios.rules