alert tcp $HOME_NET 1024: -> $EXTERNAL_NET 443 (msg:"ET MALWARE [GIGAMON_ATR] FIN8 BADHATCH CnC Checkin"; flow:established,to_server; dsize:64; content:"-SH"; offset:44; depth:3; pcre:"/(?:[0-9A-F]{8}\-){5}\-SH/"; content:"|02 09 01|"; offset:52; depth:3; reference:url,atr-blog.gigamon.com/2019/07/23/abadbabe-8badf00d:-discovering-badhatch-and-a-detailed-look-at-fin8's-tooling/; classtype:command-and-control; sid:2027752; rev:1; metadata:created_at 2019_07_23, deployment Perimeter, malware_family ShellTea, performance_impact Low, confidence High, signature_severity Major, tag Backdoor, updated_at 2019_07_26;)