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DCToolbox

A PowerShell toolbox for Microsoft 365 security fans.

Author: Daniel Chronlund (https://danielchronlund.com)

About DCToolbox

This PowerShell module contains a collection of tools for Microsoft 365 security tasks, Microsoft Graph functions, Entra ID management, Conditional Access, zero trust strategies, attack and defense scenarios, etc.

Get Started

Install the module from the PowerShell Gallery by running:

Install-Module DCToolbox

If you already installed it, update to the latest version by running:

Update-Module DCToolbox

PowerShell Gallery package link: https://www.powershellgallery.com/packages/DCToolbox

When you have installed it, to get started, run:

Get-DCHelp

Explore and copy script examples to your clipboard with:

Copy-DCExample

Included Tools

Add-DCConditionalAccessPoliciesBreakGlassGroup

Synopsis:

Excludes a specified Entra ID security group from all Conditional Access policies in the tenant.

Details:

Excludes a specified Entra ID security group from all Conditional Access policies in the tenant.

Please create the group and add your break glass accounts before running this command.

You can filter on a name prefix with -PrefixFilter.

Parameters:

-PrefixFilter
Description:	Only modify the policies with this prefix. The filter is case sensitive.
Required:		false

-ExcludeGroupName
Description:	The name of your exclude group in Entra ID. Please create the group and add your break glass accounts before running this command.
Required:		true

Examples:

Add-DCConditionalAccessPoliciesBreakGlassGroup -PrefixFilter 'GLOBAL - ' -ExcludeGroupName 'Excluded from Conditional Access'

Confirm-DCPowerShellVersion

Synopsis:

Check that a supported PowerShell version is running.

Details:

Parameters:

Examples:

Confirm-DCPowerShellVersion
    
Confirm-DCPowerShellVersion -Verbose

Connect-DCMsGraphAsApplication

Synopsis:

Connect to Microsoft Graph with application credentials.

Details:

This CMDlet will automatically connect to Microsoft Graph using application permissions (as opposed to delegated credentials). If successfull an access token is returned that can be used with other Graph CMDlets. Make sure you store the access token in a variable according to the example.

Before running this CMDlet, you first need to register a new application in your Entra ID according to this article: https://danielchronlund.com/2018/11/19/fetch-data-from-microsoft-graph-with-powershell-paging-support/

Parameters:

-ClientID
Description:	Client ID for your Entra ID application.
Required:		true

-ClientSecret
Description:	Client secret for the Entra ID application.
Required:		true

-TenantName
Description:	The name of your tenant (example.onmicrosoft.com).
Required:		true

Examples:

$AccessToken = Connect-DCMsGraphAsApplication -ClientID '8a85d2cf-17c7-4ecd-a4ef-05b9a81a9bba' -ClientSecret 'j[BQNSi29Wj4od92ritl_DHJvl1sG.Y/' -TenantName 'example.onmicrosoft.com'

Connect-DCMsGraphAsUser

Synopsis:

Connect to Microsoft Graph with the Microsoft Graph PowerShell module as a user (using delegated permissions in Graph).

Details:

Parameters:

-Scopes
Description:	The required API permission scopes (delegated permissions). Example: "Policy.ReadWrite.ConditionalAccess", "Policy.Read.All"
Required:		true

Examples:

Connect-DCMsGraphAsUser -Scopes 'Policy.ReadWrite.ConditionalAccess', 'Policy.Read.All', 'Directory.Read.All'
    
Connect-DCMsGraphAsUser -Scopes 'Policy.ReadWrite.ConditionalAccess', 'Policy.Read.All', 'Directory.Read.All' -Verbose

Copy-DCExample

Synopsis:

Copy-DCExample

Details:

Parameters:

Examples:

Deploy-DCConditionalAccessBaselinePoC

Synopsis:

Automatically deploy the latest version of the Conditional Access policy design baseline from https://danielchronlund.com.

Details:

This CMDlet downloads the latest version of the Conditional Access policy design baseline from https://danielchronlund.com/2020/11/26/azure-ad-conditional-access-policy-design-baseline-with-automatic-deployment-support/. It creates all necessary dependencies like exclusion groups, named locations, and terms of use, and then deploys all Conditional Access policies in the baseline.

All Conditional Access policies created by this CMDlet will be set to report-only mode.

The purpose of this tool is to quickly deploy the complete baseline as a PoC. You can then test, pilot, and deploy it going forward.

You must be a Global Admin to run this command (because of the admin consent required) but no other preparations are required.

Parameters:

-AddCustomPrefix
Description:	Adds a custom prefix to all policy names.
Required:		false

-ExcludeGroupDisplayName
Description:	Set a custom name for the break glass exclude group. Default: 'Excluded from Conditional Access'. You can set this to an existing group if you already have one.
Required:		false

-ServiceAccountGroupDisplayName
Description:	Set a custom name for the service account group. Default: 'Conditional Access Service Accounts'. You can set this to an existing group if you already have one.
Required:		false

-NamedLocationCorpNetwork
Description:	Set a custom name for the corporate network named location. Default: 'Corporate Network'. You can set this to an existing named location if you already have one.
Required:		false

-NamedLocationAllowedCountries
Description:	Set a custom name for the allowed countries named location. Default: 'Allowed Countries'. You can set this to an existing named location if you already have one.
Required:		false

-TermsOfUseName
Description:	Set a custom name for the terms of use. Default: 'Terms of Use'. You can set this to an existing Terms of Use if you already have one.
Required:		false

-SkipPolicies
Description:	Specify one or more policy names in the baseline that you want to skip.
Required:		false

-SkipReportOnlyMode
Description:	All Conditional Access policies created by this CMDlet will be set to report-only mode if you don't use this parameter. WARNING: Use this parameter with caution since ALL POLICIES will go live for ALL USERS when you specify this.
Required:		false

Examples:

Deploy-DCConditionalAccessBaselinePoC
    
Deploy-DCConditionalAccessBaselinePoC -AddCustomPrefix 'PILOT - '
Deploy-DCConditionalAccessBaselinePoC @Parameters    
# Customize names of dependencies.
$Parameters = @{
    ExcludeGroupDisplayName = 'Excluded from Conditional Access'
    ServiceAccountGroupDisplayName = 'Conditional Access Service Accounts'
    NamedLocationCorpNetwork = 'Corporate Network'
    NamedLocationAllowedCountries = 'Allowed Countries'
    TermsOfUseName = 'Terms of Use'
}
    
Deploy-DCConditionalAccessBaselinePoC -SkipPolicies "GLOBAL - 108 - BLOCK - High-Risk Sign-Ins", "GLOBAL - 109 - BLOCK - High-Risk Users", "GLOBAL - 201 - GRANT - Medium-Risk Sign-Ins", "GLOBAL - 202 - GRANT - Medium-Risk Users"
    
Deploy-DCConditionalAccessBaselinePoC -SkipReportOnlyMode # WARNING: USE WITH CAUTION!

Enable-DCEntraIDPIMRole

Synopsis:

Activate an Entra ID Privileged Identity Management (PIM) role with PowerShell.

Details:

Uses the Graph PowerShell module to activate a user selected Entra ID role in Entra ID Privileged Identity Management (PIM).

During activation, the user will be prompted to specify a reason for the activation.

Parameters:

-RolesToActivate
Description:	This parameter is optional but if you specify it, you can select multiple roles to activate at ones.
Required:		false

-Reason
Description:	Specify the reason for activating your roles.
Required:		false

-UseMaximumTimeAllowed
Description:	Use this switch to automatically request maximum allowed time for all role assignments.
Required:		false

Examples:

Enable-DCEntraIDPIMRole
    
Enable-DCEntraIDPIMRole -RolesToActivate 'Exchange Administrator', 'Security Reader'
    
Enable-DCEntraIDPIMRole -RolesToActivate 'Exchange Administrator', 'Security Reader' -UseMaximumTimeAllowed
    
Enable-DCEntraIDPIMRole -RolesToActivate 'Exchange Administrator', 'Security Reader' -Reason 'Performing some Exchange security configuration.' -UseMaximumTimeAllowed

Export-DCConditionalAccessPolicyDesign

Synopsis:

Export all Conditional Access policies to JSON.

Details:

This CMDlet uses Microsoft Graph to export all Conditional Access policies in the tenant to a JSON file. This JSON file can be used for backup, documentation or to deploy the same policies again with Import-DCConditionalAccessPolicyDesign. You can basically treat Conditional Access as code!

The user running this CMDlet (the one who signs in when the authentication pops up) must have the appropriate permissions in Entra ID (Global Admin, Security Admin, Conditional Access Admin, etc).

Parameters:

-FilePath
Description:	The file path where the new JSON file will be created. Skip this to use the current path.
Required:		false

-PrefixFilter
Description:	Only export the policies with this prefix. The filter is case sensitive.
Required:		false

Examples:

Export-DCConditionalAccessPolicyDesign
    
$Parameters = @{
    FilePath = 'C:\Temp\Conditional Access.json'
}
Export-DCConditionalAccessPolicyDesign @Parameters
    
$Parameters = @{
    FilePath = 'C:\Temp\Conditional Access.json'
    PrefixFilter = 'GLOBAL - '
}
Export-DCConditionalAccessPolicyDesign @Parameters

Get-DCConditionalAccessPolicies

Synopsis:

List all Conditional Access policies in the tenant.

Details:

List all Conditional Access policies in the tenant.

You can filter on a name prefix with -PrefixFilter.

Parameters:

-PrefixFilter
Description:	Only show the policies with this prefix. The filter is case sensitive.
Required:		false

-ShowTargetResources
Description:	Show included and excluded resources in output. Only relevant without -Details.
Required:		false

-Details
Description:	Include policy details in output.
Required:		false

-NamesOnly
Description:	Show names only in output.
Required:		false

Examples:

Get-DCConditionalAccessPolicies
    
Get-DCConditionalAccessPolicies -PrefixFilter 'GLOBAL - '

Get-DCEntraIDUsersAndGroupsAsGuest

Synopsis:

This script lets a guest user enumerate users and security groups/teams when 'Guest user access restrictions' in Entra ID is set to the default configuration.

Details:

This script is a proof of concept. Don't use it for bad things! It lets a guest user enumerate users and security groups/teams when 'Guest user access restrictions' in Entra ID is set to the default configuration. It works around the limitation that guest users must do explicit lookups for users and groups. It basically produces a list of all users and groups in the tenant, even though such actions are blocked for guests by default.

If the target tenant allows guest users to sign in with Entra ID PowerShell, and the 'Guest user access restrictions' is set to one of these two settings: 'Guest users have the same access as members (most inclusive)' 'Guest users have limited access to properties and memberships of directory objects' [default]

And not set to: 'Guest user access is restricted to properties and memberships of their own directory objects (most restrictive)'

...then this script will query Entra ID for the group memberships of the specified -InterestingUsers that you already know the UPN of. It then perform nested queries until all users and groups have been found. It will stop after a maximum of 5 iterations to avoid throttling and infinite loops. "A friend of a friend of a friend..."

Finally, the script will output one array with found users, and one array with found groups/teams. You can then export them to CSV or some other format of your choice. Export examples are outputed for your convenience.

Parameters:

-TenantId
Description:	The tenant ID of the target tenant where you are a guest. You can find all your guest tenant IDs here: https://portal.azure.com/#settings/directory
Required:		true

-AccountId
Description:	Your UPN in your home tenant (probably your email address, right?).
Required:		true

-InterestingUsers
Description:	One or more UPNs of users in the target tenant. These will serve as a starting point for the search, and one or two employees you know about is often sufficient to enumerate everything.
Required:		true

Examples:

Get-DCEntraIDUsersAndGroupsAsGuest -TenantId '00000000-0000-0000-0000-000000000000' -AccountId 'user@example.com' -InterestingUsers 'customer1@customer.com', 'customer2@customer.com'

Get-DCHelp

Synopsis:

Get-DCHelp

Details:

Parameters:

Examples:

Get-DCNamedLocations

Synopsis:

List Named Locations in the tenant.

Details:

List Named Locations in the tenant.

You can filter on a name prefix with -PrefixFilter.

Parameters:

-PrefixFilter
Description:	Only show the named locations with this prefix. The filter is case sensitive.
Required:		false

Examples:

Get-DCNamedLocations
    
Get-DCNamedLocations -PrefixFilter 'OFFICE-'
    
# List all trusted IP addresses.
(Get-DCNamedLocations | where isTrusted -eq $true).ipRanges | Select-Object -Unique | Sort-Object
    
# List all countries.
(Get-DCNamedLocations).countriesAndRegions | Select-Object -Unique | Sort-Object

Get-DCPublicIp

Synopsis:

Get current public IP address information.

Details:

Get the current public IP address and related information. The ipinfo.io API is used to fetch the information. You can use the -UseTorHttpProxy to route traffic through a running Tor network HTTP proxy that was started by Start-DCTorHttpProxy.

Parameters:

-UseTorHttpProxy
Description:	Route traffic through a running Tor network HTTP proxy that was started by Start-DCTorHttpProxy.
Required:		false

Examples:

Get-DCPublicIp
    
(Get-DCPublicIp).ip
    
Write-Host "$((Get-DCPublicIp).city) $((Get-DCPublicIp).country)"

Import-DCConditionalAccessPolicyDesign

Synopsis:

Import Conditional Access policies from JSON.

Details:

This CMDlet uses Microsoft Graph to automatically create Conditional Access policies from a JSON file.

The JSON file can be created from existing policies with Export-DCConditionalAccessPolicyDesign or manually by following the syntax described in the Microsoft Graph documentation: https://docs.microsoft.com/en-us/graph/api/resources/conditionalaccesspolicy?view=graph-rest-1.0

All Conditional Access policies created by this CMDlet will be set to report-only mode if you don't use the -SkipReportOnlyMode override.

WARNING: If you want to, you can also delete all existing policies when deploying your new ones with -DeleteAllExistingPolicies, Use this parameter with caution and always create a backup with Export-DCConditionalAccessPolicyDesign first!

The user running this CMDlet (the one who signs in when the authentication pops up) must have the appropriate permissions in Entra ID (Global Admin, Security Admin, Conditional Access Admin, etc).

As a best practice you should always have an Entra ID security group with break glass accounts excluded from all Conditional Access policies.

Parameters:

-FilePath
Description:	The file path of the JSON file containing your Conditional Access policies.
Required:		true

-SkipReportOnlyMode
Description:	All Conditional Access policies created by this CMDlet will be set to report-only mode if you don't use this parameter.
Required:		false

-DeleteAllExistingPolicies
Description:	WARNING: If you want to, you can delete all existing policies when deploying your new ones with -DeleteAllExistingPolicies, Use this parameter with causon and allways create a backup with Export-DCConditionalAccessPolicyDesign first!!
Required:		false

-AddCustomPrefix
Description:	Adds a custom prefix to all policy names.
Required:		false

-PrefixFilter
Description:	Only import (and delete) the policies with this prefix in the JSON file. The filter is case sensitive.
Required:		false

Examples:

Import-DCConditionalAccessPolicyDesign @Parameters    
$Parameters = @{
    FilePath = 'C:\Temp\Conditional Access.json'
    SkipReportOnlyMode = $false
    DeleteAllExistingPolicies = $false
}
Import-DCConditionalAccessPolicyDesign @Parameters    
$Parameters = @{
    FilePath = 'C:\Temp\Conditional Access.json'
    SkipReportOnlyMode = $false
    DeleteAllExistingPolicies = $false
    AddCustomPrefix = 'PILOT - '
}
Import-DCConditionalAccessPolicyDesign @Parameters    
$Parameters = @{
    FilePath = 'C:\Temp\Conditional Access.json'
    SkipReportOnlyMode = $true
    DeleteAllExistingPolicies = $true
    PrefixFilter = 'GLOBAL - '
}

Install-DCMicrosoftGraphPowerShellModule

Synopsis:

Check, install, and update the Microsoft Graph PowerShell module.

Details:

Parameters:

Examples:

Install-DCMicrosoftGraphPowerShellModule
    
Install-DCMicrosoftGraphPowerShellModule -Verbose

Install-DCToolbox

Synopsis:

Check, install, and update the DCToolbox PowerShell module.

Details:

Parameters:

Examples:

Install-DCToolbox
    
Install-DCToolbox -Verbose

Invoke-DCConditionalAccessGallery

Synopsis:

Select policies from a list of Entra ID Conditional Access templates, and deploy them in report-only mode.

Details:

Select policies from a list of Entra ID Conditional Access templates, and deploy them in report-only mode.

The script will automatically create any missing groups, named locations, country lists, and terms of use, and replace the names in the JSON with the corresponding IDs.

It will also output the result of the policy creation in JSON-format.

Parameters:

Examples:

Invoke-DCConditionalAccessGallery

Invoke-DCConditionalAccessSimulation

Synopsis:

Simulates the Entra ID Conditional Access evaluation process of a specific scenario.

Details:

Uses Microsoft Graph to fetch all Entra ID Conditional Access policies. It then evaluates which policies that would have been applied if this was a real sign-in to Entra ID. Use the different parameters available to specify the conditions. Details are included under each parameter.

Parameters:

-JSONFile
Description:	Only use this parameter if you want to analyze a local JSON file export of Conditional Access polices, instead of a live tenant. Point it to the local JSON file. Export JSON with Export-DCConditionalAccessPolicyDesign (or any other tool exporting Conditional Access policies from Microsoft Graph to JSON), like 'Entra Exporter'.
Required:		false

-UserPrincipalName
Description:	The UPN of the simulated Entra ID user signing in. Can also be set to 'All' for all users, or 'GuestsOrExternalUsers' to test external user sign-in scenarios. Example: 'user@example.com'. Default: 'All'.
Required:		false

-ApplicationDisplayName
Description:	The display name of the application targeted by Conditional Access policies (same display name as in Entra ID Portal when creating Conditional Access policies). Example 1: 'Office 365'. Example 2: 'Microsoft Admin Portals'. Default: 'All'.
Required:		false

-UserAction
Description:	Under construction...
Required:		false

-ClientApp
Description:	The client app type used during sign-in. Possible values: 'browser', 'mobileAppsAndDesktopClients', 'exchangeActiveSync', 'easSupported', 'other'. Default: 'browser'
Required:		false

-TrustedIPAddress
Description:	Specify if the simulated sign-in comes from a trusted IP address (marked as trusted in Named Locations)? $true or $false? Don't specify the actual IP address. That is not really that important when simulating policy evaluation. Default: $false
Required:		false

-Country
Description:	The country code for the sign-in country of origin based on IP address geo data. By default, this script tries to resolve the IP address of the current PowerShell session.
Required:		false

-Platform
Description:	Specify the OS platform of the client signing in. Possible values: 'all', 'android', 'iOS', 'windows', 'windowsPhone', 'macOS', 'linux', 'spaceRocket'. Default: 'windows'
Required:		false

-SignInRiskLevel
Description:	Specify the Entra ID Protection sign-in risk level. Possible values: 'none', 'low', 'medium', 'high'. Default: 'none'
Required:		false

-UserRiskLevel
Description:	Specify the Entra ID Protection user risk level. Possible values: 'none', 'low', 'medium', 'high'. Default: 'none'
Required:		false

-SummarizedOutput
Description:	By default, this script returns PowerShell objects representing all applied Conditional Access policies only. This can be used for piping to other tools, etc. But sometimes you also want a simple answer of what would happen during the simulated policy evaluation. Specify this parameter to add a summarized and simplified output (outputs to 'Informational' stream with Write-Host).
Required:		false

-VerbosePolicyEvaluation
Description:	Include detailed verbose policy evaluation info. Use for troubleshooting and debugging.
Required:		false

-IncludeNonMatchingPolicies
Description:	Also, include all policies that did not match, and therefor was not applied. This can be useful to produce different kinds of Conditional Access reports.
Required:		false

Examples:

# Run basic evaluation with default settings.
Invoke-DCConditionalAccessSimulation | Format-List
Invoke-DCConditionalAccessSimulation @Parameters    
# Run evaluation with custom settings.
$Parameters = @{
    UserPrincipalName = 'user@example.com'
    ApplicationDisplayName = 'Office 365'
    ClientApp = 'mobileAppsAndDesktopClients'
    TrustedIPAddress = $true
    Country = 'US'
    Platform = 'windows'
    SignInRiskLevel = 'medium'
    UserRiskLevel = 'high'
    SummarizedOutput = $true
    VerbosePolicyEvaluation = $false
    IncludeNonMatchingPolicies = $false
}
    
# Run basic evaluation offline against a JSON of Conditional Access policies.
Invoke-DCConditionalAccessSimulation -JSONFile 'Conditional Access Backup.json' | Format-List

Invoke-DCEntraIDDeviceAuthFlow

Synopsis:

Get a refresh token (or access token) from Entra ID using device code flow.

Details:

This CMDlet will start a device code flow authentication process in Entra ID. Go to the provided URL and enter the code to authenticate. The script will wait for the authentication and then return the refresh token, and also copy it to the clipboard.

A refresh token fetched by this tool can be replayed on another device.

Parameters:

-ShowTokenDetails
Description:	Add this parameter if you want to display the token details on successful authentication.
Required:		false

-ReturnAccessTokenInsteadOfRefreshToken
Description:	Return an access token instead of a refresh token.
Required:		false

-ClientID
Description:	OPTIONAL: Specify the client ID for which a refresh token should be requested. Defaults to 'Microsoft Azure PowerShell' (1950a258-227b-4e31-a9cf-717495945fc2). If you set this parameter, you must also specify -TenantID. Note that the app registration in Entra ID must have device code flow enabled under Authentication > Advanced settings.
Required:		false

-TenantID
Description:	OPTIONAL: Specify your tenant ID. You only need to specify this if you're specifying a ClientID with -ClientID. This is because Microsoft needs to now in which tenant a specific app is located.
Required:		false

Examples:

Invoke-DCEntraIDDeviceAuthFlow
    
$RefreshToken = Invoke-DCEntraIDDeviceAuthFlow
    
Invoke-DCEntraIDDeviceAuthFlow -ShowTokenDetails
    
Invoke-DCEntraIDDeviceAuthFlow -ClientID '' -TenantID ''

Invoke-DCHuntingQuery

Synopsis:

Connect to Microsoft Graph with the Microsoft Graph PowerShell module and run a KQL hunting query in Microsoft Defender XDR.

Details:

Connect to Microsoft Graph with the Microsoft Graph PowerShell module and run a KQL hunting query in Microsoft Defender XDR.

Parameters:

-Query
Description:	The KQL query you want to run in Microsoft Defender XDR.
Required:		true

-IncludeKQLQueryAtTop
Description:	
Required:		false

-IncludeRaw
Description:	Include the raw formated and escaped KQL query sent to Microsoft Graph.
Required:		false

Examples:

Invoke-DCHuntingQuery -Query $Query    
$Query = @'
DeviceEvents
| where ActionType startswith "Asr"
| summarize count() by ActionType
| order by count_
'@
Invoke-DCHuntingQuery -Query $Query -IncludeKQLQueryAtTop    
$Query = @'
DeviceEvents
| where ActionType startswith "Asr"
| summarize count() by ActionType
| order by count_
'@

Invoke-DCM365DataExfiltration

Synopsis:

This script uses an Entra ID app registration to download all files from all M365 groups (Teams) document libraries in a tenant.

Details:

This script is a proof of concept and for testing purposes only. Do not use this script in an unethical or unlawful way. Don’t be stupid!

This script showcase how an attacker can exfiltrate huge amounts of files from a Microsoft 365 tenant, using a poorly protected Entra ID app registration with any of the following Microsoft Graph permissions:

• Files.Read.All
• Files.ReadWrite.All
• Sites.Read.All
• Sites.ReadWrite.All

Also, one of the following permissions is required to enumerate M365 groups and SharePoint document libraries:

• GroupMember.Read.All
• Group.Read.All
• Directory.Read.All
• Group.ReadWrite.All
• Directory.ReadWrite.All

The script will loop through all M365 groups and their SharePoint Online document libraries (used by Microsoft Teams for storing files) and download all files it can find, down to three folder levels. The files will be downloaded to the current directory.

A list of downloaded files will be copied to the clipboard after completion.

You can run the script with -WhatIf to skip the actual downloads. It will still show the output and what would have been downloaded.

Parameters:

-ClientID
Description:	Client ID for your Entra ID application.
Required:		true

-ClientSecret
Description:	Client secret for the Entra ID application.
Required:		true

-TenantName
Description:	The name of your tenant (example.onmicrosoft.com).
Required:		true

-WhatIf
Description:	Skip the actual downloads. It will still show the output and what would have been downloaded.
Required:		false

Examples:

Invoke-M365DataExfiltration -ClientID '8a85d2cf-17c7-4ecd-a4ef-05b9a81a9bba' -ClientSecret 'j[BQNSi29Wj4od92ritl_DHJvl1sG.Y/' -TenantName 'example.onmicrosoft.com'
    
Invoke-M365DataExfiltration -ClientID '8a85d2cf-17c7-4ecd-a4ef-05b9a81a9bba' -ClientSecret 'j[BQNSi29Wj4od92ritl_DHJvl1sG.Y/' -TenantName 'example.onmicrosoft.com' -WhatIf

Invoke-DCM365DataWiper

Synopsis:

This script uses an Entra ID app registration to wipe all files from all M365 groups (Teams) document libraries in a tenant.

Details:

This script is a proof of concept and for testing purposes only. Do not use this script in an unethical or unlawful way. Don’t be stupid!

This script showcase how an attacker can wipe huge amounts of files from a Microsoft 365 tenant, using a poorly protected Entra ID app registration with any of the following Microsoft Graph permissions:

• Files.ReadWrite.All
• Sites.ReadWrite.All

Also, one of the following permissions is required to enumerate M365 groups and SharePoint document libraries:

• GroupMember.Read.All
• Group.Read.All
• Directory.Read.All
• Group.ReadWrite.All
• Directory.ReadWrite.All

The script will loop through all M365 groups and their SharePoint Online document libraries (used by Microsoft Teams for storing files) and delete all files it can find, down to three folder levels. The files will be downloaded to the current directory.

A list of downloaded files will be copied to the clipboard after completion.

You can run the script with -WhatIf to skip the actual deletion. It will still show the output and what would have been deleted.

Parameters:

-ClientID
Description:	Client ID for your Entra ID application.
Required:		true

-ClientSecret
Description:	Client secret for the Entra ID application.
Required:		true

-TenantName
Description:	The name of your tenant (example.onmicrosoft.com).
Required:		true

-WhatIf
Description:	Skip the actual deletion. It will still show the output and what would have been deleted.
Required:		false

Examples:

Invoke-DCM365DataWiper -ClientID '8a85d2cf-17c7-4ecd-a4ef-05b9a81a9bba' -ClientSecret 'j[BQNSi29Wj4od92ritl_DHJvl1sG.Y/' -TenantName 'example.onmicrosoft.com'
    
Invoke-DCM365DataWiper -ClientID '8a85d2cf-17c7-4ecd-a4ef-05b9a81a9bba' -ClientSecret 'j[BQNSi29Wj4od92ritl_DHJvl1sG.Y/' -TenantName 'example.onmicrosoft.com' -WhatIf

Invoke-DCMsGraphQuery

Synopsis:

Run a Microsoft Graph query.

Details:

This CMDlet will run a query against Microsoft Graph and return the result. It will connect using an access token generated by Connect-DCMsGraphAsDelegated or Connect-DCMsGraphAsApplication (depending on what permissions you use in Graph).

Before running this CMDlet, you first need to register a new application in your Entra ID according to this article: https://danielchronlund.com/2018/11/19/fetch-data-from-microsoft-graph-with-powershell-paging-support/

Parameters:

-AccessToken
Description:	An access token generated by Connect-DCMsGraphAsDelegated or Connect-DCMsGraphAsApplication (depending on what permissions you use in Graph).
Required:		true

-GraphMethod
Description:	The HTTP method for the Graph call, like GET, POST, PUT, PATCH, DELETE. Default is GET.
Required:		false

-GraphUri
Description:	The Microsoft Graph URI for the query. Example: https://graph.microsoft.com/v1.0/users/
Required:		true

-GraphBody
Description:	The request body of the Graph call. This is often used with methids like POST, PUT and PATCH. It is not used with GET.
Required:		false

Examples:

Invoke-DCMsGraphQuery -AccessToken $AccessToken -GraphMethod 'GET' -GraphUri 'https://graph.microsoft.com/v1.0/users/'

New-DCConditionalAccessAssignmentReport

Synopsis:

Automatically generate an Excel report containing your current Conditional Access assignments.

Details:

Uses Microsoft Graph to fetch all Conditional Access policy assignments, both group- and user assignments (for now, it doesn't support role assignments). It exports them to Excel in a nicely formatted report for your filtering and analysing needs. If you include the -IncludeGroupMembers parameter, members of assigned groups will be included in the report as well (of course, this can produce very large reports if you have included large groups in your policy assignments).

The purpose of the report is to give you an overview of how Conditional Access policies are currently applied in an Entra ID tenant, and which users are targeted by which policies.

The report does not include information about the policies themselves. Use New-DCConditionalAccessPolicyDesignReport for that task.

The CMDlet also uses the PowerShell Excel Module for the export to Excel. You can install this module with: Install-Module ImportExcel -Force

The report is exported to Excel and will automatically open. In Excel, please do this:

1. Select all cells.
2. Click on "Wrap Text".
3. Click on "Top Align".

The report is now easier to read.

More information can be found here: https://danielchronlund.com/2020/10/20/export-your-conditional-access-policy-assignments-to-excel/

Parameters:

-IncludeGroupMembers
Description:	If you include the -IncludeGroupMembers parameter, members of assigned groups will be included in the report as well (of course, this can produce a very large report if you have included large groups in your policy assignments).
Required:		false

Examples:

New-DCConditionalAccessAssignmentReport
    
New-DCConditionalAccessAssignmentReport -IncludeGroupMembers

New-DCConditionalAccessPolicyDesignReport

Synopsis:

Automatically generate an Excel report containing your current Conditional Access policy design.

Details:

Uses Microsoft Graph to fetch all Conditional Access policies and exports an Excel report, You can use the report as documentation, design document, or to get a nice overview of all your policies.

The CMDlet also uses the PowerShell Excel Module for the export to Excel. You can install this module with: Install-Module ImportExcel -Force

The report is exported to Excel and will automatically open. In Excel, please do this:

1. Select all cells.
2. Click on "Wrap Text".
3. Click on "Top Align".

The report is now easier to read.

The user running this CMDlet (the one who signs in when the authentication pops up) must have the appropriate permissions in Entra ID (Global Admin, Security Admin, Conditional Access Admin, etc).

Parameters:

Examples:

New-DCConditionalAccessPolicyDesignReport

New-DCEntraIDAppPermissionsReport

Synopsis:

Generate a report containing all Entra ID Enterprise Apps and App Registrations with API permissions (application permissions only) in the tenant.

Details:

Uses Microsoft Graph to fetch all Entra ID Enterprise Apps and App Registrations with API permissions (application permissions only) and generate a report. The report includes app names, API permissions, secrets/certificates, and app owners.

The purpose is to find vulnerable applications and API permissions in Entra ID.

Applications marked with 'AppHostedInExternalTenant = False' also has a corresponding App Registration in this tenant. This means that App Registration Owners has the same permissions as the application.

Parameters:

Examples:

# Get all API application permissions assigned to applications in tenant.
New-DCEntraIDAppPermissionsReport
    
# Look for sensitive permissions.
$Result = New-DCEntraIDAppPermissionsReport
$Result | where RoleName -in 'RoleManagement.ReadWrite.Directory', 'Application.ReadWrite.All', 'AppRoleAssignment.ReadWrite.All'
    
# Export report to Excel for further filtering and analysis.
$Result = New-DCEntraIDAppPermissionsReport
$Path = "$((Get-Location).Path)\Entra ID Enterprise Apps Report $(Get-Date -Format 'yyyy-MM-dd').xlsx"
$Result | Export-Excel -Path $Path -WorksheetName "Enterprise Apps" -BoldTopRow -FreezeTopRow -AutoFilter -AutoSize -ClearSheet -Show

New-DCEntraIDStaleAccountReport

Synopsis:

Automatically generate an Excel report containing all stale Entra ID accounts.

Details:

Uses Microsoft Graph to fetch all Entra ID users who has not signed in for a specific number of days, and exports an Excel report. Some users might not have a last sign-in timestamp at all (maybe they didn't sign in or maybe they signed in a very long time ago), but they are still included in the report.

Before running this CMDlet, you first need to register a new application in your Entra ID according to this article: https://danielchronlund.com/2018/11/19/fetch-data-from-microsoft-graph-with-powershell-paging-support/

The following Microsoft Graph API permissions are required for this script to work: Directory.Read.All AuditLog.Read.All

The CMDlet also uses the PowerShell Excel Module for the export to Excel. You can install this module with: Install-Module ImportExcel -Force

Also, the user running this CMDlet (the one who signs in when the authentication pops up) must have the appropriate permissions in Entra ID (Global Admin, Global Reader, Security Admin, Security Reader, etc).

Parameters:

-ClientID
Description:	Client ID for the Entra ID application with Microsoft Graph permissions.
Required:		true

-ClientSecret
Description:	Client secret for the Entra ID application with Microsoft Graph permissions.
Required:		true

-LastSeenDaysAgo
Description:	Specify the number of days ago the account was last seen. Note that you can only see as long as your Entra ID sign-in logs reach (30 days by default).
Required:		false

-OnlyMembers
Description:	Only include member accounts (no guest accounts) in the report.
Required:		false

-OnlyGuests
Description:	Only include guest accounts (no member accounts) in the report.
Required:		false

-IncludeMemberOf
Description:	Add a column with all group/teams memberships.
Required:		false

Examples:

New-DCEntraIDStaleAccountReport @Parameters


$Parameters = @{
    ClientID = ''
    ClientSecret = ''
    LastSeenDaysAgo = 10
    OnlyGuests = $true
    IncludeMemberOf = $true
}
New-DCEntraIDStaleAccountReport @Parameters    
$Parameters = @{
    ClientID = ''
    ClientSecret = ''
    LastSeenDaysAgo = 30
}

Remove-DCConditionalAccessPolicies

Synopsis:

Delete ALL Conditional Access policies in a tenant.

Details:

This script is a proof of concept and for testing purposes only. Do not use this script in an unethical or unlawful way. Don’t be stupid!

This CMDlet uses Microsoft Graph to automatically delete all Conditional Access policies in a tenant. It was primarily created to clean-up lab tenants, and as an attack PoC.

This CMDlet will prompt you for confirmation multiple times before deleting policies.

Parameters:

-PrefixFilter
Description:	Only delete the policies with this prefix. The filter is case sensitive.
Required:		false

Examples:

Remove-DCConditionalAccessPolicies
    
Remove-DCConditionalAccessPolicies -PrefixFilter 'TEST - '

Rename-DCConditionalAccessPolicies

Synopsis:

Rename Conditional Access policies that matches a specific prefix.

Details:

This command helps you to quickly rename a bunch of Conditional Access policies by searching for a specific prefix.

If you dontt specify a PrefixFilter, ALL policies will be modified to include the new prefix .

Parameters:

-PrefixFilter
Description:	Only toggle the policies with this prefix. The filter is case sensitive.
Required:		false

-AddCustomPrefix
Description:	Adds a custom prefix to all policy names.
Required:		false

Examples:

Rename-DCConditionalAccessPolicies -PrefixFilter 'PILOT - ' -AddCustomPrefix 'PROD - '
    
Rename-DCConditionalAccessPolicies -PrefixFilter 'GLOBAL - ' -AddCustomPrefix 'REPORT - GLOBAL - '
    
Rename-DCConditionalAccessPolicies -AddCustomPrefix 'OLD - '

Set-DCConditionalAccessPoliciesPilotMode

Synopsis:

Toggles Conditional Access policies between 'All users' and a specified pilot group.

Details:

This command helps you to quickly toggle you Conditional Access policies between a pilot and production. It does this by switching policies targeting a specified pilot group and 'All users'.

It is common to use a dedicated Entra ID security group to target specific pilot users during a Conditional Access deployment project. When the pilot is completed you want to move away from that pilot group and target 'All users' in the organization instead (at least with your global baseline).

You must filter the toggle with a prefix filter to only modify specific policies. Use a prefix like "GLOBAL -" or "PILOT -" for easy bulk management. This is a built-in safety measure.

Parameters:

-PrefixFilter
Description:	Only toggle the policies with this prefix. The filter is case sensitive.
Required:		true

-PilotGroupName
Description:	The name of your pilot group in Entra ID (must be a security group for users).
Required:		true

-EnablePilot
Description:	Modify all specified Conditional Access policies to target your pilot group.
Required:		false

-EnableProduction
Description:	Modify all specified Conditional Access policies to target 'All users'.
Required:		false

Examples:

Set-DCConditionalAccessPoliciesPilotMode -PrefixFilter 'GLOBAL - ' -PilotGroupName 'Conditional Access Pilot' -EnablePilot
    
Set-DCConditionalAccessPoliciesPilotMode -PrefixFilter 'GLOBAL - ' -PilotGroupName 'Conditional Access Pilot' -EnableProduction

Set-DCConditionalAccessPoliciesReportOnlyMode

Synopsis:

Toggles Conditional Access policies between 'Report-only' and Enabled.

Details:

This command helps you to quickly toggle you Conditional Access policies between Report-only and Enabled.

If will skip any policies in Disabled state.

You must filter the toggle with a prefix filter to only modify specific policies. This is a built-in safety measure.

Parameters:

-PrefixFilter
Description:	Only toggle the policies with this prefix. The filter is case sensitive.
Required:		true

-SetToReportOnly
Description:	Modify all specified Conditional Access policies to report-only.
Required:		false

-SetToEnabled
Description:	Modify all specified Conditional Access policies to Enabled.
Required:		false

Examples:

Set-DCConditionalAccessPoliciesReportOnlyMode -PrefixFilter 'GLOBAL - ' -SetToReportOnly
    
Set-DCConditionalAccessPoliciesReportOnlyMode -PrefixFilter 'GLOBAL - ' -SetToEnabled

Start-DCTorHttpProxy

Synopsis:

Start a Tor network HTTP proxy for anonymous HTTP calls via PowerShell.

Details:

Start a Tor network HTTP proxy that can be used for anonymization of HTTP traffic in PowerShell. Requires proxy support in the PowerShell CMDlet you want to anonymise. Many of the tools included in DCToolbox supports this.

Start the proxy: Start-DCTorHttpProxy

The proxy will launch in a new PowerShell window that you can minimize.

You can test it out (and find your currentn Tor IP address and location) with: Get-DCPublicIp -UseTorHttpProxy

For other CMDlets, use the following proxy configuration: 127.0.0.1:9150

Note: This CMDlet expects the Tor browser to be installed under C:\Temp\Tor Browser. You can change the path with -TorBrowserPath.

Download Tor browser: https://www.torproject.org/download/

Parameters:

-TorBrowserPath
Description:	The path to the Tor browser directory. Default is 'C:\Temp\Tor Browser'.
Required:		false

Examples:

Start-DCTorHttpProxy

Test-DCEntraIDCommonAdmins

Synopsis:

Test if common and easily guessed admin usernames exist for specified Entra ID domains.

Details:

Uses Test-DCEntraIDUserExistence to test if common and weak admin account names exist in specified Entra ID domains. It uses publicaly available Microsoft endpoints to query for this information. Run help Test-DCEntraIDUserExistence for more info.

Do not use this script in an unethical or unlawful way. Use it to find weak spots in you Entra ID configuration.

Parameters:

-Domains
Description:	An array of one or more domains to test.
Required:		true

-UseTorHttpProxy
Description:	Use a running Tor network HTTP proxy that was started by Start-DCTorHttpProxy.
Required:		false

Examples:

Test-DCEntraIDCommonAdmins -UseTorHttpProxy -Domains "example.com", "example2.onmicrosoft.com"

Test-DCEntraIDUserExistence

Synopsis:

Test if an account exists in Entra ID for specified email addresses.

Details:

This CMDlet will connect to public endpoints in Entra ID to find out if an account exists for specified email addresses or not. This script works without any authentication to Entra ID. This is called user enumeration in cyber security.

The script can't see accounts for federated domains (since they are on-prem accounts) but it will tell you what organisation the federated domain belongs to.

Do not use this script in an unethical or unlawful way. Use it to find weak spots in you Entra ID configuration.

Parameters:

-Users
Description:	An array of one or more user email addresses to test.
Required:		true

-UseTorHttpProxy
Description:	Use a running Tor network HTTP proxy that was started by Start-DCTorHttpProxy.
Required:		false

Examples:

Test-DCEntraIDUserExistence -UseTorHttpProxy -Users "user1@example.com", "user2@example.com", "user3@example.onmicrosoft.com"

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