alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE XcodeGhost CnC Checkin"; flow:established,to_server; http.method; content:"POST"; http.host; content:"init.icloud-analysis.com"; fast_pattern; bsize:24; reference:url,github.com/XcodeGhostSource/XcodeGhost; classtype:command-and-control; sid:2021822; rev:3; metadata:created_at 2015_09_23, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_06_01;)