alert tcp $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE KL-Remote / Cryp_Banker14 RAT connection";
flow:established,to_server;
dsize:13;
content:"|3c 7c|PRINCIPAL|7c 3e|"; fast_pattern;
flowbits:set,ET.KLRemote;
reference:md5,636edeba541483421e29b81b35f92841;
reference:md5,c5763d0ef12dffa213d265596bd1acf9;
reference:md5,5e01557b8650616e005a9949cbf5459a;
classtype:trojan-activity;
sid:2020315; rev:2;
metadata:created_at 2015_01_27, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_08;
)