alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MOBILE_MALWARE Oscorp/UBEL Activity";
flow:established,to_server;
http.uri;
content:"/api/app/device/"; startswith; fast_pattern;
http.user_agent;
content:"|3b 20|Android|3b 20|";
http.host;
content:".xyz"; endswith;
http.header_names;
content:!"Referer";
reference:url,www.cleafy.com/cleafy-labs/ubel-oscorp-evolution;
classtype:trojan-activity;
sid:2033679; rev:2;
metadata:attack_target Mobile_Client, created_at 2021_08_05, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_08_05;
)