alert tcp any any -> any any (msg:"ATTACK [PTsecurity] PrintNightmare attempt (CVE-2021-1675)"; flow:established, to_server; content:"|05 00 00|"; depth:70; content:"|59 00|"; distance:19; within:2; flowbits:isset, DCERPC.SPOOLSS.Bind; threshold:type limit, track by_dst, count 1, seconds 60; reference:url, github.com/ptresearch/AttackDetection; reference:cve, 2021-1675; metadata:Open Ptsecurity.com ruleset; metadata:created_at 2021_07_12, updated_at 2021_08_10; classtype:attempted-admin; sid:10006627; rev:3;)