alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO PSRC Powershell File Request"; flow:established,from_client; flowbits:set,ET.PS.Download; http.request_line; content:".psrc HTTP/1."; nocase; fast_pattern; classtype:bad-unknown; sid:2032167; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_03_18, deployment Perimeter, confidence High, signature_severity Informational, updated_at 2021_03_18;)