alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE MargulasRAT Checkin M2"; flow:established,to_server; content:"|00 93 2d 95 a9 6e fb 6c fb e0 02 ba 4b 2a a9 d9 e5|"; offset:3; depth:17; reference:md5,5d54adefcf435c4e9f1705df690386c7; reference:url,blog.talosintelligence.com/2021/07/sidecopy.html; classtype:command-and-control; sid:2033335; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_07_15, deployment Perimeter, malware_family MargulasRAT, performance_impact Low, confidence High, signature_severity Major, tag RAT, updated_at 2021_07_15;)