alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET [443,5665] (msg:"ET POLICY PTsecurity Remote Desktop AeroAdmin handshake"; flow:established,to_server; content:"|e1 00 00 00 00|"; startswith; content:"|00 00 d8 00 00 00 4d 49 47 64 4d 41|"; distance:2; within:12; fast_pattern; threshold:type limit, track by_src, count 1, seconds 30; reference:url,www.aeroadmin.com/en/; reference:md5,fa6ad2e8eef98abc0bbb252ff994a38d; classtype:misc-activity; sid:2025009; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_11_16, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag RemoteAccessTool, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_09;)