alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MOBILE_MALWARE SymbOS/Yxes CnC Checkin Message"; flow:established,to_server; http.uri; content:".jsp?Version="; fast_pattern; content:"&PhoneType="; content:"&PhoneImei="; content:"PhoneImsi="; content:"&PhoneNumber="; content:"&Succeed="; content:"&Fail="; content:"&Source="; content:"&Time="; reference:url,blog.fortinet.com/symbosyxes-goes-version-2/; classtype:command-and-control; sid:2013140; rev:4; metadata:attack_target Mobile_Client, created_at 2011_06_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_16, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)