alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE Suspected Powershell Empire GET M1";
flow:to_server,established;
http.method;
content:"GET";
http.uri;
content:".php"; endswith;
http.cookie;
content:"session="; depth:8;
http.header_names;
content:"Cookie|0d 0a|User-Agent|0d 0a|Host|0d 0a|"; fast_pattern;
classtype:trojan-activity;
sid:2027284; rev:4;
metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_04_25, deployment Perimeter, malware_family PowerShell_Empire, performance_impact Significant, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_04;
)