alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Bioazih RAT Checkin"; flow:to_server,established; http.header; content:"Hostname|3a|"; content:"Ip|3a|"; content:"Os|3a|"; content:"Proxy|3a|"; fast_pattern; content:"Vm|3a|"; http.user_agent; content:"Pass|3a|"; startswith; reference:md5,7bc5451341a684aca80a59a463bad973; reference:md5,5443cf2b6c010c57cf740356c9167b77; reference:url,blogs.technet.com/b/mmpc/archive/2015/04/13/bioazih-rat-how-clean-file-metadata-can-help-keep-you-safe.aspx; classtype:command-and-control; sid:2020927; rev:5; metadata:created_at 2015_04_16, signature_severity Major, updated_at 2020_09_30;)