alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Dyreza RAT Checkin 2"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"_W"; content:"|2e|"; distance:6; within:1; content:"/NAT/"; distance:0; fast_pattern; content:"|20|NAT/"; distance:0; http.header_names; to_lowercase; content:!"|0d 0a|accept|0d 0a|"; content:!"|0d 0a|connection|0d 0a|"; content:!"|0d 0a|referer|0d 0a|"; reference:md5,2a835747b7442b1d58ab30abc90d3b0f; reference:url,phishme.com/project-dyre-new-rat-slurps-bank-credentials-bypasses-ssl/; classtype:command-and-control; sid:2018683; rev:9; metadata:created_at 2014_07_16, deprecation_reason Age, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_28, reviewed_at 2024_03_08;)