Featured image of post Documenting with PowerShell: Documenting admin actions

Documenting with PowerShell: Documenting admin actions

So with all this exchange news going around, I figured there’s enough people writing about that so I won’t bother; there’s lots a smart scripts flying about that can be used to find the webshells, etc. Instead I’m focussing on M365 admin actions.

All actions an administrator takes are written to the unified audit log, this makes it easy to find when an admin makes a change, unfortunately the unified audit log only goes back 90 days; at times you’ll want to see exactly when a license has been removed, or you just want a quick overview of what happened today, this script allows you to do just that.

We’re using the Search-UnifiedAdminLog cmdlet to find actions any type of admin as performed.

You should schedule this script daily, as we’re only picking up the last day of admin actions. As always, there’s two version; one for IT-Glue and another HTML version

HTML version

The HTML version uses PsWriteHTML and the Secure Application Model.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
######### Secrets #########
$ApplicationId = 'ApplicationID'
$ApplicationSecret = 'ApplicationSecret' | ConvertTo-SecureString -Force -AsPlainText
$TenantID = 'TenantID'
$RefreshToken = 'LongRefreshToken'
$ExchangeRefreshToken = 'LongExchangeRefreshToken'
$UPN = "YourPrettyUpnUsedToGenerateTokens"
######### Secrets #########

$credential = New-Object System.Management.Automation.PSCredential($ApplicationId, $ApplicationSecret)
$aadGraphToken = New-PartnerAccessToken -ApplicationId $ApplicationId -Credential $credential -RefreshToken $refreshToken -Scopes 'https://graph.windows.net/.default' -ServicePrincipal -Tenant $tenantID
$graphToken = New-PartnerAccessToken -ApplicationId $ApplicationId -Credential $credential -RefreshToken $refreshToken -Scopes 'https://graph.microsoft.com/.default' -ServicePrincipal -Tenant $tenantID
Connect-MsolService -AdGraphAccessToken $aadGraphToken.AccessToken -MsGraphAccessToken $graphToken.AccessToken

$customers = Get-MsolPartnerContract -All

foreach ($customer in $customers) {
    $token = New-PartnerAccessToken -ApplicationId 'a0c73c16-a7e3-4564-9a95-2bdf47383716'-RefreshToken $ExchangeRefreshToken -Scopes 'https://outlook.office365.com/.default' -Tenant $customer.TenantId
    $tokenValue = ConvertTo-SecureString "Bearer $($token.AccessToken)" -AsPlainText -Force
    $credential = New-Object System.Management.Automation.PSCredential($upn, $tokenValue)
    $customerId = $customer.DefaultDomainName
    $session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri "https://ps.outlook.com/powershell-liveid?DelegatedOrg=$($customerId)&BasicAuthToOAuthConversion=true" -Credential $credential -Authentication Basic -AllowRedirection
    $null = Import-PSSession $session -allowclobber -DisableNameChecking -CommandName "Search-unifiedAuditLog", "Get-AdminAuditLogConfig"
    $AdminRoles = (Get-MsolRole | Where-Object -Property name -like '*admin*' | ForEach-Object { Get-MsolRoleMember -TenantId $customer.TenantId -RoleObjectId $_.ObjectId }).emailaddress -join ","
    $startDate = (Get-Date).AddDays(-1)
    $endDate = (Get-Date)
    Write-Host "Retrieving logs for $($customer.name)" -ForegroundColor Blue
    $Logs = do {
        $log = Search-unifiedAuditLog -SessionCommand ReturnLargeSet -SessionId $customer.name -UserIds $AdminRoles -ResultSize 5000 -StartDate $startDate -EndDate $endDate
        $log
        Write-Host "    Retrieved $($log.count) logs for user $($guest.UserPrincipalName)" -ForegroundColor Green
    } while ($Log.count % 5000 -eq 0 -and $log.count -ne 0)
    Remove-PSSession $session -ErrorAction SilentlyContinue
    $Actions = $logs | ForEach-Object {
        $AuditData = ConvertFrom-Json $_.AuditData
        [PSCustomObject]@{
            'Creationdate '      = $_.Creationdate
            'User'               = $_.UserIDs
            'Operation'          = $_.Operations
            'Workload'           = $AuditData.Workload
            'ObjectID'           = $AuditData.ObjectId
            'Client IP'          = $AuditData.ClientIP
            'Updated Properties' = ($AuditData.modifiedproperties | where-object -Property name -eq 'Included Updated Properties').newvalue -join ','
        }
    }
    New-HTML {
        New-HTMLTab -Name $customer.Name {
            New-HTMLSection -Invisible {
                New-HTMLSection -HeaderText 'Logbook' {
                    New-HTMLTable -DataTable $Actions
                }
            }
        }
    } -FilePath "C:\temp\$($customer.DefaultDomainName).html" -Online

}

IT-Glue version

The IT-Glue version also stores just 1 day, but overwrites the same asset each time so it’s easy to find the history of a tenant by browsing the versions within IT-Glue.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
######### Secrets #########
$ApplicationId = 'ApplicationID'
$ApplicationSecret = 'ApplicationSecret' | ConvertTo-SecureString -Force -AsPlainText
$TenantID = 'TenantID'
$RefreshToken = 'LongRefreshToken'
$ExchangeRefreshToken = 'LongExchangeRefreshToken'
$UPN = "YourPrettyUpnUsedToGenerateTokens"
######### Secrets #########

######################### IT-Glue ############################
$ITGkey = "YOURITGLUEKEY"
$APIEndpoint = "https://api.eu.itglue.com"
$FlexAssetName = "M365 Admin Audit log"
$Description = "A logbook of actions an admin has performed in the last 24 hours."
########################## IT-Glue ############################

#Grabbing ITGlue Module and installing.
If (Get-Module -ListAvailable -Name "ITGlueAPI") {
    Import-module ITGlueAPI
}
Else {
    Install-Module ITGlueAPI -Force
    Import-Module ITGlueAPI
}
#Settings IT-Glue logon information
Add-ITGlueBaseURI -base_uri $APIEndpoint
Add-ITGlueAPIKey $ITGkey

write-host "Checking if Flexible Asset exists in IT-Glue." -foregroundColor green
$FilterID = (Get-ITGlueFlexibleAssetTypes -filter_name $FlexAssetName).data
if (!$FilterID) {
    write-host "Does not exist, creating new." -foregroundColor green
    $NewFlexAssetData =
    @{
        type          = 'flexible-asset-types'
        attributes    = @{
            name        = $FlexAssetName
            icon        = 'sitemap'
            description = $description
        }
        relationships = @{
            "flexible-asset-fields" = @{
                data = @(
                    @{
                        type       = "flexible_asset_fields"
                        attributes = @{
                            order           = 1
                            name            = "Tenant"
                            kind            = "Text"
                            required        = $true
                            "show-in-list"  = $true
                            "use-for-title" = $true
                        }
                    },
                    @{
                        type       = "flexible_asset_fields"
                        attributes = @{
                            order          = 2
                            name           = "Actions"
                            kind           = "Textbox"
                            required       = $false
                            "show-in-list" = $false
                        }
                    }
                )
            }
        }
    }
    New-ITGlueFlexibleAssetTypes -Data $NewFlexAssetData
    $FilterID = (Get-ITGlueFlexibleAssetTypes -filter_name $FlexAssetName).data
}

write-host "Getting IT-Glue contact list" -ForegroundColor Green
$i = 0
$AllITGlueContacts = do {
    $Contacts = (Get-ITGlueContacts -page_size 1000 -page_number $i).data.attributes
    $i++
    $Contacts
    Write-Host "Retrieved $($Contacts.count) Contacts" -ForegroundColor Yellow
} while ($Contacts.count % 1000 -eq 0 -and $Contacts.count -ne 0)

write-host "Generating unique ID List" -ForegroundColor Green
$DomainList = foreach ($Contact in $AllITGlueContacts) {
    $ITGDomain = ($contact.'contact-emails'.value -split "@") | Select-Object -last 1
    [PSCustomObject]@{
        Domain   = $ITGDomain
        OrgID    = $Contact.'organization-id'
        Combined = "$($ITGDomain)$($Contact.'organization-id')"
    }
}


$credential = New-Object System.Management.Automation.PSCredential($ApplicationId, $ApplicationSecret)
$aadGraphToken = New-PartnerAccessToken -ApplicationId $ApplicationId -Credential $credential -RefreshToken $refreshToken -Scopes 'https://graph.windows.net/.default' -ServicePrincipal -Tenant $tenantID
$graphToken = New-PartnerAccessToken -ApplicationId $ApplicationId -Credential $credential -RefreshToken $refreshToken -Scopes 'https://graph.microsoft.com/.default' -ServicePrincipal -Tenant $tenantID
Connect-MsolService -AdGraphAccessToken $aadGraphToken.AccessToken -MsGraphAccessToken $graphToken.AccessToken

$customers = Get-MsolPartnerContract -All

foreach ($customer in $customers) {
    $domains = Get-MsolDomain -TenantId $customer.TenantId
    $token = New-PartnerAccessToken -ApplicationId 'a0c73c16-a7e3-4564-9a95-2bdf47383716'-RefreshToken $ExchangeRefreshToken -Scopes 'https://outlook.office365.com/.default' -Tenant $customer.TenantId
    $tokenValue = ConvertTo-SecureString "Bearer $($token.AccessToken)" -AsPlainText -Force
    $credential = New-Object System.Management.Automation.PSCredential($upn, $tokenValue)
    $customerId = $customer.DefaultDomainName
    $session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri "https://ps.outlook.com/powershell-liveid?DelegatedOrg=$($customerId)&BasicAuthToOAuthConversion=true" -Credential $credential -Authentication Basic -AllowRedirection
    $null = Import-PSSession $session -allowclobber -DisableNameChecking -CommandName "Search-unifiedAuditLog", "Get-AdminAuditLogConfig"
    $AdminRoles = (Get-MsolRole | Where-Object -Property name -like '*admin*' | ForEach-Object { Get-MsolRoleMember -TenantId $customer.TenantId -RoleObjectId $_.ObjectId }).emailaddress -join ","
    $startDate = (Get-Date).AddDays(-1)
    $endDate = (Get-Date)
    Write-Host "Retrieving logs for $($customer.name)" -ForegroundColor Blue
    $Logs = do {
        $log = Search-unifiedAuditLog -SessionCommand ReturnLargeSet -SessionId $customer.name -UserIds $AdminRoles -ResultSize 5000 -StartDate $startDate -EndDate $endDate
        $log
        Write-Host "    Retrieved $($log.count) logs for admins $AdminRoles" -ForegroundColor Green
    } while ($Log.count % 5000 -eq 0 -and $log.count -ne 0)
    Remove-PSSession $session -ErrorAction SilentlyContinue
    $Actions = $logs | ForEach-Object {
        $AuditData = ConvertFrom-Json $_.AuditData
        [PSCustomObject]@{
            'Creationdate '      = $_.Creationdate
            'User'               = $_.UserIDs
            'Operation'          = $_.Operations
            'Workload'           = $AuditData.Workload
            'ObjectID'           = $AuditData.ObjectId
            'Client IP'          = $AuditData.ClientIP
            'Updated Properties' = ($AuditData.modifiedproperties | where-object -Property name -eq 'Included Updated Properties').newvalue -join ','
        }
    }
    if (!$actions) {
        $HTMLActions = "<b>No logs have been found for this period</b>"
    }
    else {
        $HTMLActions = ($Actions | ConvertTo-Html -Fragment | Out-String) -replace "<th>", "<th style=`"background-color:#4CAF50`">"
    }
    $FlexAssetBody =
    @{
        type       = "flexible-assets"
        attributes = @{
            traits = @{
                "tenant"  = $customer.name
                "actions" = $HTMLActions

            }
        }
    }
    write-output "             Finding $($customer.name) in IT-Glue"
    $orgid = foreach ($customerDomain in $domains) {
        ($domainList | Where-Object { $_.domain -eq $customerDomain.name }).'OrgID' | Select-Object -Unique
    }
    write-output "             Uploading O365 admin log into IT-Glue"
    foreach ($org in $orgID) {
        $ExistingFlexAsset = (Get-ITGlueFlexibleAssets -filter_flexible_asset_type_id $FilterID.id -filter_organization_id $org).data | Where-Object { $_.attributes.traits.'tenant' -eq $customer.name }
        #If the Asset does not exist, we edit the body to be in the form of a new asset, if not, we just upload.
        if (!$ExistingFlexAsset) {
            if ($FlexAssetBody.attributes.'organization-id') {
                $FlexAssetBody.attributes.'organization-id' = $org
            }
            else {
                $FlexAssetBody.attributes.add('organization-id', $org)
                $FlexAssetBody.attributes.add('flexible-asset-type-id', $FilterID.id)
            }
            write-output "                      Creating new admin log into IT-Glue organisation $org"
            New-ITGlueFlexibleAssets -data $FlexAssetBody

        }
        else {
            write-output "                      Updating admin log into IT-Glue organisation $org"
            $ExistingFlexAsset = $ExistingFlexAsset | select-object -Last 1
            Set-ITGlueFlexibleAssets -id $ExistingFlexAsset.id  -data $FlexAssetBody
        }

    }
}

This will look like this in IT-Glue;

And that’s it! this should give you some more insight into admin actions via your documentation system. As always, Happy PowerShelling!

All blogs are posted under AGPL3.0 unless stated otherwise
comments powered by Disqus
Built with Hugo
Theme Stack designed by Jimmy