alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/Downloader_x.EJK!tr CnC Activity"; flow:established,to_server; http.method; content:"GET"; http.request_body; content:"VM|3a 20|"; startswith; content:"|0a|WINDOWS|3a 20|"; distance:0; content:"|0a|COMPNAME|3a 20|"; distance:0; fast_pattern; content:"|0a|dhcp|3a 20|"; distance:0; reference:md5,0241deba165817083c66fae17e09d68f; classtype:command-and-control; sid:2030797; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_08_26, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_26;)