alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/PSW.WOW.NLZ CnC Activity"; flow:established,to_server; http.request_line; content:"GET /in/3/"; startswith; content:"?d56tdrf2z="; distance:0; fast_pattern; http.header_names; content:!"|0d 0a|Referer|0d 0a|"; reference:md5,2bf730c712910a18f09e4d53750594d2; classtype:command-and-control; sid:2033918; rev:2; metadata:attack_target Client_Endpoint, created_at 2021_09_09, deployment Perimeter, malware_family Win32_PSW_WOW_NLZ, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_09;)