alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE xCaon Embedded Encrypted Command in Webpage"; flow:established,from_server; http.stat_code; content:"200"; file.data; content:"|3c 21 2d 2d 7c 23|"; fast_pattern; content:!"="; distance:0; within:4; content:"|23 7c 2d 2d 3e|"; distance:0; within:300; classtype:command-and-control; sid:2033245; rev:2; metadata:created_at 2021_07_05, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_06_29;)