alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE Lemon_Duck Powershell - RDP Credential Exfil";
flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/report.json?type=rdp&ip="; startswith; fast_pattern;
content:"&pass="; distance:0;
content:"&t="; distance:0;
reference:url,news.sophos.com/en-us/2019/10/01/lemon_duck-powershell-malware-cryptojacks-enterprise-networks/;
classtype:command-and-control;
sid:2029014; rev:1;
metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_11_20, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2019_11_20;
)