Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET ATTACK_RESPONSE Inbound PowerShell Checking for Virtual Host (Win32_Fan WMI)"; flow:established,from_server; http.stat_code; content:"200"; file.data; content:"Get-WmiObject -Query"; nocase; content:"Select|20|*|20|from|20|win32_fan"; fast_pattern; nocase; reference:url,researchcenter.paloaltonetworks.com/2018/09/unit42-oilrig-targets-middle-eastern-government-adds-evasion-techniques-oopsie/; classtype:bad-unknown; sid:2026074; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2018_09_05, deployment Perimeter, deployment alert_only, performance_impact Low, confidence High, signature_severity Minor, tag PowerShell, tag Enumeration, tag Anti_VM, updated_at 2024_12_12;)