alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Pterodo Activity (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".kdc/"; fast_pattern; http.header_names; content:!"Referer"; http.host; pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/"; http.request_body; content:"username="; startswith; content:"_"; distance:0; content:"&cart="; distance:0; content:"&cacogenics="; distance:0; reference:md5,1182940dca705e0b3a8349c9fdf99e10; reference:url,twitter.com/500mk500/status/1505638483691544580; classtype:trojan-activity; sid:2035560; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_03_22, deployment Perimeter, malware_family Gamaredon, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_05;)