alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET [!80,!443,!25,!22,!110] (msg:"ET MALWARE SideCopy APT MargulasRAT Related Activity"; flow:established,to_server; dsize:19; content:"|31 36 00 2b 9c 02 0d 6e 46 11 42 7e e5 8f 99 94 1d fe 24|"; fast_pattern; reference:md5,b361a415cb5fe33f54957b1aa58fffd6; reference:md5,ae29fbacb0a0aba4b8f82924551fae4d; classtype:trojan-activity; sid:2035474; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_03_16, deployment Perimeter, malware_family SideCopy, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_16;)