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SentinelallInOne.ps1
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SentinelallInOne.ps1
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param(
[Parameter(Mandatory=$true)]$ResourceGroup,
[Parameter(Mandatory=$true)]$Workspace,
[Parameter(Mandatory=$true)]$Location
)
function CheckModules($module) {
if($module -eq "AzSentinel"){
$moduleVer = @{ModuleName="AzSentinel";ModuleVersion="0.6.13"}
$service = Get-Module $moduleVer
}
else{
$service = Get-Module -ListAvailable -Name $module
}
if (-Not $service) {
if($module -eq "AzSentinel"){
Install-Module -Name $module -MinimumVersion 0.6.13 -Scope CurrentUser -Force
}
else {
Install-Module -Name $module -Scope CurrentUser -Force
}
}
}
CheckModules("Az.Resources")
CheckModules("Az.OperationalInsights")
CheckModules("AzSentinel")
Write-Host "`r`nIf not logged in to Azure already, you will now be asked to log in to your Azure environment. `nFor this script to work correctly, you need to provide credentials of a Global Admin or Security Admin for your organization. `nThis will allow the script to enable all required connectors.`r`n" -BackgroundColor Magenta
Read-Host -Prompt "Press enter to continue or CTRL+C to quit the script"
$context = Get-AzContext
if(!$context){
Connect-AzAccount
$context = Get-AzContext
}
$SubscriptionId = $context.Subscription.Id
$ConnectorsFile = ".\connectors.json"
#Create Resource Group
Get-AzResourceGroup -Name $ResourceGroup -ErrorVariable notPresent -ErrorAction SilentlyContinue
if ($notPresent){
Write-Host "Creating resource group $ResourceGroup in region $Location..."
New-AzResourceGroup -Name $ResourceGroup -Location $Location
}
else{
Write-Host "Resource Group $ResourceGroup already exists. Skipping..."
}
#Create Log Analytics workspace
try {
$WorkspaceObject = Get-AzOperationalInsightsWorkspace -Name $Workspace -ResourceGroupName $ResourceGroup -ErrorAction Stop
$ExistingLocation = $WorkspaceObject.Location
Write-Output "Workspace named $Workspace in region $ExistingLocation already exists. Skipping..."
} catch {
Write-Output "Creating new workspace named $Workspace in region $Location..."
# Create the new workspace for the given name, region, and resource group
New-AzOperationalInsightsWorkspace -Location $Location -Name $Workspace -Sku Standard -ResourceGroupName $ResourceGroup
}
$solutions = Get-AzOperationalInsightsIntelligencePack -resourcegroupname $ResourceGroup -WorkspaceName $Workspace -WarningAction:SilentlyContinue
if (($solutions | Where-Object Name -eq 'SecurityInsights').Enabled) {
Write-Host "Azure Sentinel is already installed on workspace $($Workspace)"
}
else {
Set-AzSentinel -WorkspaceName $Workspace -Confirm:$false
}
$msTemplates = Get-AzSentinelAlertRuleTemplates -workspace $Workspace -Kind MicrosoftSecurityIncidentCreation
#Resource URL to authentincate against
$Resource = "https://management.azure.com/"
#Urls to be used for Sentinel API calls
$baseUri = "/subscriptions/${SubscriptionId}/resourceGroups/${ResourceGroup}/providers/Microsoft.OperationalInsights/workspaces/${Workspace}"
$connectedDataConnectorsUri = "$baseUri/providers/Microsoft.SecurityInsights/dataConnectors/?api-version=2020-01-01"
function Get-ConnectedDataconnectors{
try {
$allConnectedDataconnectors = (Invoke-AzRestMethod -Path $connectedDataConnectorsUri -Method GET).Content | ConvertFrom-Json
}
catch {
$errorReturn = $_
Write-Error "Unable to invoke webrequest with error message: $errorReturn" -ErrorAction Stop
}
return $allConnectedDataconnectors
}
function checkDataConnector($dataConnector){
$currentDataconnector = "" | Select-Object -Property guid,etag,isEnabled
if ($allConnectedDataconnectors.value.Length -ne 0){
foreach ($value in $allConnectedDataconnectors.value){
if ($value.kind -eq $dataConnector) {
Write-Host "Successfully queried data connector $($value.kind) - already enabled"
Write-Verbose $value
$currentDataconnector.guid = $value.name
$currentDataconnector.etag = $value.etag
$currentDataconnector.isEnabled = $true
break
}
}
if ($currentDataconnector.isEnabled -ne $true)
{
$currentDataconnector.guid = (New-Guid).Guid
$currentDataconnector.etag = $null
$currentDataconnector.isEnabled = $false
}
}
else{
$currentDataconnector.guid = (New-Guid).Guid
$currentDataconnector.etag = $null
$currentDataconnector.isEnabled = $false
}
return $currentDataconnector
}
function BuildDataconnectorPayload($dataConnector, $guid, $etag, $isEnabled){
if ($dataConnector.kind -ne "AzureSecurityCenter")
{
$connectorProperties = $dataConnector.properties
$connectorProperties | Add-Member -NotePropertyName tenantId -NotePropertyValue ${context}.Tenant.Id
}
else {
$connectorProperties = $dataConnector.properties
$connectorProperties | Add-Member -NotePropertyName subscriptionId -NotePropertyValue ${context}.Subscription.Id
}
if ($isEnabled) {
# Compose body for connector update scenario
Write-Host "Updating data connector $($dataConnector.kind)"
Write-Verbose "Name: $guid"
Write-Verbose "Etag: $etag"
$connectorBody = @{}
$connectorBody | Add-Member -NotePropertyName kind -NotePropertyValue $dataConnector.kind -Force
$connectorBody | Add-Member -NotePropertyName name -NotePropertyValue $guid -Force
$connectorBody | Add-Member -NotePropertyName etag -NotePropertyValue $etag -Force
$connectorBody | Add-Member -NotePropertyName properties -NotePropertyValue $connectorProperties
}
else {
# Compose body for connector enable scenario
Write-Host "$($dataConnector.kind) data connector is not enabled yet"
Write-Host "Enabling data connector $($dataConnector.kind)"
Write-Verbose "Name: $guid"
$connectorBody = @{}
$connectorBody | Add-Member -NotePropertyName kind -NotePropertyValue $dataConnector.kind -Force
$connectorBody | Add-Member -NotePropertyName properties -NotePropertyValue $connectorProperties
}
return $connectorBody
}
function EnableOrUpdateDataconnector($baseUri, $guid, $connectorBody, $isEnabled){
$uri = "${baseUri}/providers/Microsoft.SecurityInsights/dataConnectors/${guid}?api-version=2020-01-01"
try {
$result = Invoke-AzRestMethod -Path $uri -Method PUT -Payload ($connectorBody | ConvertTo-Json -Depth 3)
if ($result.StatusCode -eq 200) {
if ($isEnabled){
Write-Host "Successfully updated data connector: $($connector.kind)" -ForegroundColor Green
}
else {
Write-Host "Successfully enabled data connector: $($connector.kind)" -ForegroundColor Green
}
}
else {
Write-Error "Unable to enable data connector $($connector.kind) with error: $($result.Content)"
}
Write-Host ($body.Properties | Format-List | Format-Table | Out-String)
}
catch {
$errorReturn = $_
Write-Verbose $_
Write-Error "Unable to invoke webrequest with error message: $errorReturn" -ErrorAction Stop
}
}
function EnableMSAnalyticsRule($msProduct){
try {
foreach ($rule in $msTemplates){
if ($rule.productFilter -eq $msProduct) {
New-AzSentinelAlertRule -WorkspaceName $Workspace -Kind MicrosoftSecurityIncidentCreation -DisplayName $rule.displayName -Description $rule.description -Enabled $true -ProductFilter $msProduct -DisplayNamesFilter "" |Out-Null
Write-Host "Done!" -ForegroundColor Green
}
}
}
catch {
$errorReturn = $_
Write-Verbose $_
Write-Error "Unable to create analytics rule with error message: $errorReturn" -ErrorAction Stop
}
}
#Getting all rules from file
$connectors = Get-Content -Raw -Path $ConnectorsFile | ConvertFrom-Json
#Getting all connected Data connectors
$allConnectedDataconnectors = Get-ConnectedDataconnectors
foreach ($connector in $connectors.connectors) {
Write-Host "`r`nProcessing connector: " -NoNewline
Write-Host "$($connector.kind)" -ForegroundColor Blue
#AzureActivityLog connector
if ($connector.kind -eq "AzureActivityLog") {
$SubNoHyphens = $SubscriptionId -replace '-',''
$uri = "$baseUri/datasources/${SubNoHyphens}?api-version=2015-11-01-preview"
$connectorBody = ""
$activityEnabled = $false
#Check if AzureActivityLog is already connected (there is no better way yet) [assuming there is only one AzureActivityLog from same subscription connected]
try {
# AzureActivityLog is already connected, compose body with existing etag for update
$result = Invoke-AzRestMethod -Path $uri -Method GET
if ($result.StatusCode -eq 200){
Write-Host "Successfully queried data connector ${connector.kind} - already enabled"
Write-Verbose $result
Write-Host "Updating data connector $($connector.kind)"
$activityEnabled = $true
}
else {
Write-Host "$($connector.kind) data connector is not enabled yet"
Write-Host "Enabling data connector $($connector.kind)"
$activityEnabled = $false
}
}
catch {
$errorReturn = $_
Write-Error "Unable to invoke webrequest with error message: $errorReturn" -ErrorAction Stop
}
$connectorProperties = @{
linkedResourceId = "/subscriptions/${SubscriptionId}/providers/microsoft.insights/eventtypes/management"
}
$connectorBody = @{}
$connectorBody | Add-Member -NotePropertyName kind -NotePropertyValue $connector.kind -Force
$connectorBody | Add-Member -NotePropertyName properties -NotePropertyValue $connectorProperties
#Enable or Update AzureActivityLog Connector with http puth method
try {
$result = Invoke-AzRestMethod -Path $uri -Method PUT -Payload ($connectorBody | ConvertTo-Json -Depth 3)
if ($result.StatusCode -eq 200) {
if ($activityEnabled){
Write-Host "Successfully updated data connector: $($connector.kind)" -ForegroundColor Green
}
else {
Write-Host "Successfully enabled data connector: $($connector.kind)" -ForegroundColor Green
}
}
else {
Write-Host "Unable to enable data connector $($connector.kind) with error: $($result.Content)"
}
Write-Verbose ($body.Properties | Format-List | Format-Table | Out-String)
}
catch {
$errorReturn = $_
Write-Verbose $_.Exception.Message
Write-Error "Unable to invoke webrequest with error message: $errorReturn" -ErrorAction Stop
}
}
#AzureSecurityCenter connector
elseif ($connector.kind -eq "AzureSecurityCenter") {
$dataConnectorBody = ""
#query for connected Data connectors
$connectorProperties = checkDataConnector($connector.kind)
$dataConnectorBody = BuildDataconnectorPayload $connector $connectorProperties.guid $connectorProperties.etag $connectorProperties.isEnabled
EnableOrUpdateDataconnector $baseUri $connectorProperties.guid $dataConnectorBody $connectorProperties.isEnabled
Write-Host "Adding Analytics Rule for data connector Azure Security Center..." -NoNewline
EnableMSAnalyticsRule "Azure Security Center"
}
#Office365 connector
elseif ($connector.kind -eq "Office365") {
$dataConnectorBody = ""
#query for connected Data connectors
$connectorProperties = checkDataConnector($connector.kind)
$dataConnectorBody = BuildDataconnectorPayload $connector $connectorProperties.guid $connectorProperties.etag $connectorProperties.isEnabled
EnableOrUpdateDataconnector $baseUri $connectorProperties.guid $dataConnectorBody $connectorProperties.isEnabled
}
#MicrosoftCloudAppSecurity connector
elseif ($connector.kind -eq "MicrosoftCloudAppSecurity") {
$dataConnectorBody = ""
#query for connected Data connectors
$connectorProperties = checkDataConnector($connector.kind)
$dataConnectorBody = BuildDataconnectorPayload $connector $connectorProperties.guid $connectorProperties.etag $connectorProperties.isEnabled
EnableOrUpdateDataconnector $baseUri $connectorProperties.guid $dataConnectorBody $connectorProperties.isEnabled
Write-Host "Adding Analytics Rule for data connector Microsoft Cloud App Security..." -NoNewline
EnableMSAnalyticsRule "Microsoft Cloud App Security"
}
#AzureAdvancedThreatProtection connector
elseif ($connector.kind -eq "AzureAdvancedThreatProtection") {
$dataConnectorBody = ""
#query for connected Data connectors
$connectorProperties = checkDataConnector($connector.kind)
$dataConnectorBody = BuildDataconnectorPayload $connector $connectorProperties.guid $connectorProperties.etag $connectorProperties.isEnabled
EnableOrUpdateDataconnector $baseUri $connectorProperties.guid $dataConnectorBody $connectorProperties.isEnabled
Write-Host "Adding Analytics Rule for data connector Azure Advanced Threat Protection..." -NoNewline
EnableMSAnalyticsRule "Azure Advanced Threat Protection"
}
#ThreatIntelligencePlatforms connector
elseif ($connector.kind -eq "ThreatIntelligence") {
$dataConnectorBody = ""
#query for connected Data connectors
$connectorProperties = checkDataConnector($connector.kind)
$dataConnectorBody = BuildDataconnectorPayload $connector $connectorProperties.guid $connectorProperties.etag $connectorProperties.isEnabled
EnableOrUpdateDataconnector $baseUri $connectorProperties.guid $dataConnectorBody $connectorProperties.isEnabled
}
#MicrosoftDefenderAdvancedThreatProtection connector
elseif ($connector.kind -eq "MicrosoftDefenderAdvancedThreatProtection") {
$dataConnectorBody = ""
#query for connected Data connectors
$connectorProperties = checkDataConnector($connector.kind)
$dataConnectorBody = BuildDataconnectorPayload $connector $connectorProperties.guid $connectorProperties.etag $connectorProperties.isEnabled
EnableOrUpdateDataconnector $baseUri $connectorProperties.guid $dataConnectorBody $connectorProperties.isEnabled
Write-Host "Adding Analytics Rule for data connector Microsoft Defender Advanced Threat Protection..." -NoNewline
EnableMSAnalyticsRule "Microsoft Defender Advanced Threat Protection"
}
#Azure Active Directory Identity Protection connector
elseif ($connector.kind -eq "AzureActiveDirectory") {
$dataConnectorBody = ""
#query for connected Data connectors
$connectorProperties = checkDataConnector($connector.kind)
$dataConnectorBody = BuildDataconnectorPayload $connector $connectorProperties.guid $connectorProperties.etag $connectorProperties.isEnabled
EnableOrUpdateDataconnector $baseUri $connectorProperties.guid $dataConnectorBody $connectorProperties.isEnabled
Write-Host "Adding Analytics Rule for data connector Azure Active Directory Identity Protection..." -NoNewline
EnableMSAnalyticsRule "Azure Active Directory Identity Protection"
}
#AzureActiveDirectory
elseif ($connector.kind -eq "AzureActiveDirectoryDiagnostics") {
<# Azure Active Directory Audit/SignIn logs - requires special call and is therefore not connectors file
# Be aware that you executing SPN needs Owner rights on tenant scope for this operation, can be added with following CLI
# az role assignment create --role Owner --scope "/" --assignee {13ece749-d0a0-46cf-8000-b2552b520631}#>
$uri = "/providers/microsoft.aadiam/diagnosticSettings/AzureSentinel_${Workspace}?api-version=2017-04-01"
$connectorProperties = $connector.properties
$connectorProperties | Add-Member -NotePropertyName workspaceId -NotePropertyValue "/subscriptions/${SubscriptionId}/resourcegroups/${ResourceGroup}/providers/Microsoft.OperationalInsights/workspaces/${Workspace}"
$connectorBody = @{}
$connectorBody | Add-Member -NotePropertyName name -NotePropertyValue "AzureSentinel_${Workspace}"
$connectorBody.Add("properties",$connectorProperties)
try {
$result = Invoke-AzRestMethod -Path $uri -Method PUT -Payload ($connectorBody | ConvertTo-Json -Depth 3)
if ($result.StatusCode -eq 200) {
Write-Host "Successfully enabled data connector: $($connector.kind)" -ForegroundColor Green
}
else {
Write-Error "Unable to enable data connector $($connector.kind) with error: $($result.Content)"
}
Write-Verbose ($body.Properties | Format-List | Format-Table | Out-String)
}
catch {
$errorReturn = $_
Write-Verbose $_
Write-Error "Unable to invoke webrequest with error message: $errorReturn" -ErrorAction Stop
}
}
}