alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Request To Suspicious Filename via Powershell (key)"; flow:established,to_server; http.uri; content:"/key"; startswith; bsize:4; http.user_agent; content:"Mozilla/"; startswith; content:") WindowsPowerShell/"; distance:0; fast_pattern; reference:md5,5ec22f6399ec0c51d120d27ecd26f2be; classtype:bad-unknown; sid:2036267; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_04_19, deployment Perimeter, confidence Medium, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_19, reviewed_at 2024_12_02;)