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;)