Versions (3)
Version DetailsCurrent
Rev: 1 • Apr 11, 2019, 12:00 PMET POLICY Tunneled RDP msts Handshake
alert tcp any [21,22,23,25,53,80,443,8080] -> any !3389 (msg:"ET POLICY Tunneled RDP msts Handshake"; dsize:<65; content:"|03 00 00|"; depth:3; content:"|e0|"; distance:2; within:1; content:"Cookie|3a 20|mstshash="; distance:5; within:17; reference:url,www.fireeye.com/blog/threat-research/2019/01/bypassing-network-restrictions-through-rdp-tunneling.html; classtype:bad-unknown; sid:2027192; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_04_11, deployment Perimeter, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)
Apr 11, 2019, 12:00 PM
Jul 26, 2019, 12:00 PM
Apr 11, 2019, 12:00 PM
Sep 24, 2025, 8:37 PM
rules/emerging-policy.rules