Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Powershell commands sent when remote host claims to send an image"; flow:established,from_server; http.content_type; content:"image/jpeg"; startswith; file.data; content:"New-Object"; nocase; content:"System.Net.WebClient"; nocase; content:"Start-Process"; fast_pattern; classtype:trojan-activity; sid:2025007; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_11_16, deployment Perimeter, malware_family PowerShell_Downloader, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_11_05;)