alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE [eSentire] Remcos RAT Checkin 25"; flow:established,to_server; content:"|38 b6 1d 2b 3b 5c 11 b4 d8 75 2c|"; depth:11; fast_pattern; content:"|35 03|"; distance:2; within:2; threshold:type limit, seconds 30, count 1, track by_src; reference:md5,41c292b0cb2a4662381635a3316226f4; classtype:command-and-control; sid:2025984; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_08_09, deployment Perimeter, malware_family Remcos, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_06;)