alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Observed Suspicious UA (PhoneMonitor)"; flow:established,to_server; http.user_agent; content:"PhoneMonitor"; bsize:12; reference:md5,09aa3bb05a55b0df864d1e1709c29960; reference:url,blog.trendmicro.com/trendlabs-security-intelligence/coronavirus-update-app-leads-to-project-spy-android-and-ios-spyware/; classtype:trojan-activity; sid:2029980; rev:1; metadata:attack_target Mobile_Client, created_at 2020_04_20, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_20;)