alert http1 $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Suspected Powershell Empire POST M1"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.cookie; content:"session="; fast_pattern; startswith; http.header_names; content:"Cookie|0d 0a|User-Agent|0d 0a|Host|0d 0a|"; classtype:trojan-activity; sid:2027283; rev:8; 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_05_05;)