alert tcp $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MOBILE_MALWARE Android/MMRAT CnC Checkin M1";
flow:established,to_server;
content:"|01 10 03 22 10|"; offset:1; fast_pattern;
pcre:"/^[a-f0-9]{16}/R";
content:"|13|20";
byte_jump:1,0, from_beginning;
isdataat:!3,relative;
reference:url,www.trendmicro.com/en_us/research/23/h/mmrat-carries-out-bank-fraud-via-fake-app-stores.html;
reference:md5,5b90ee49ed678379f1a8be9683b3fc99;
classtype:trojan-activity;
sid:2048085; rev:1;
metadata:affected_product Android, attack_target Client_Endpoint, created_at 2023_09_13, deployment Perimeter, malware_family MMRAT, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_09_13, reviewed_at 2023_09_13;
target:src_ip;
)