mirror of
https://github.com/admindroid-community/powershell-scripts.git
synced 2025-12-17 08:25:20 +00:00
303 lines
9.3 KiB
PowerShell
303 lines
9.3 KiB
PowerShell
<#
|
||
=============================================================================================
|
||
Name: Audit Microsoft Teams Channel creations in Microsoft 365
|
||
Version: 1.0
|
||
Website: o365reports.com
|
||
|
||
~~~~~~~~~~~~~~~~~~
|
||
Script Highlights:
|
||
~~~~~~~~~~~~~~~~~~
|
||
1. The script uses modern authentication to retrieve audit logs.
|
||
2. The script can be executed with an MFA enabled account too.
|
||
3. The script retrieves audit log for 180 days, by default.
|
||
4. Allows you generate a Channel creation audit report for a custom period.
|
||
5. Helps to find recently created channels. e.g., MS Teams channels created in the last 30 days.
|
||
6. Exports report results to CSV file.
|
||
7. Identifies Channels created by external/guest users.
|
||
8. Helps to monitor channels created by a specific user.
|
||
9. Helps to get private channels creations alone
|
||
10.Tracks shared channels creations alone.
|
||
11.Findsind standard channels creations alone.
|
||
12. Automatically installs the EXO module (if not installed already) upon your confirmation.
|
||
13. The script is scheduler friendly. i.e., Credentials can be passed as a parameter instead of saved inside the script.
|
||
14. The script supports Certificate-based Authentication (CBA) too.
|
||
|
||
For detailed script execution: https://o365reports.com/2023/12/19/audit-ms-teams-channel-creations-using-powershell/
|
||
============================================================================================
|
||
#>
|
||
|
||
Param
|
||
(
|
||
[Parameter(Mandatory = $false)]
|
||
[Nullable[DateTime]]$StartDate,
|
||
[Nullable[DateTime]]$EndDate,
|
||
[Int]$RecentlyCreatedChannel_In_Days,
|
||
[switch]$PrivateChannelsOnly,
|
||
[switch]$SharedChannelsOnly,
|
||
[switch]$StandardChannelsOnly,
|
||
[Switch]$CreatedByExternalUsersOnly,
|
||
[String]$CreatedBy,
|
||
[string]$Organization,
|
||
[string]$ClientId,
|
||
[string]$CertificateThumbprint,
|
||
[string]$UserName,
|
||
[string]$Password
|
||
)
|
||
|
||
Function Connect_Exo
|
||
{
|
||
#Check for EXO module inatallation
|
||
$Module = Get-Module ExchangeOnlineManagement -ListAvailable
|
||
if($Module.count -eq 0)
|
||
{
|
||
Write-Host Exchange Online PowerShell module is not available -ForegroundColor yellow
|
||
$Confirm= Read-Host Are you sure you want to install module? [Y] Yes [N] No
|
||
if($Confirm -match "[yY]")
|
||
{
|
||
Write-host "Installing Exchange Online PowerShell module"
|
||
Install-Module ExchangeOnlineManagement -Repository PSGallery -AllowClobber -Force -Scope CurrentUser
|
||
Import-Module ExchangeOnlineManagement
|
||
}
|
||
else
|
||
{
|
||
Write-Host EXO module is required to connect Exchange Online.Please install module using Install-Module ExchangeOnlineManagement cmdlet.
|
||
Exit
|
||
}
|
||
}
|
||
Write-Host Connecting to Exchange Online...
|
||
#Storing credential in script for scheduling purpose/ Passing credential as parameter - Authentication using non-MFA account
|
||
if(($UserName -ne "") -and ($Password -ne ""))
|
||
{
|
||
$SecuredPassword = ConvertTo-SecureString -AsPlainText $Password -Force
|
||
$Credential = New-Object System.Management.Automation.PSCredential $UserName,$SecuredPassword
|
||
Connect-ExchangeOnline -Credential $Credential
|
||
}
|
||
elseif($Organization -ne "" -and $ClientId -ne "" -and $CertificateThumbprint -ne "")
|
||
{
|
||
Connect-ExchangeOnline -AppId $ClientId -CertificateThumbprint $CertificateThumbprint -Organization $Organization -ShowBanner:$false
|
||
}
|
||
else
|
||
{
|
||
Connect-ExchangeOnline
|
||
}
|
||
}
|
||
|
||
$MaxStartDate=((Get-Date).AddDays(-179)).Date
|
||
if($RecentlyCreatedChannel_In_Days -ne "")
|
||
{
|
||
$StartDate=((Get-Date).AddDays(-$RecentlyCreatedChannel_In_Days)).Date
|
||
$EndDate=(Get-Date).Date
|
||
}
|
||
|
||
#Audit MS Teams channels creations in the past 180 days
|
||
if(($StartDate -eq $null) -and ($EndDate -eq $null))
|
||
{
|
||
$EndDate=(Get-Date).Date
|
||
$StartDate=$MaxStartDate
|
||
}
|
||
#Getting start date to audit MS Teams channel creation report
|
||
While($true)
|
||
{
|
||
if ($StartDate -eq $null)
|
||
{
|
||
$StartDate=Read-Host Enter start time for report generation '(Eg:12/15/2023)'
|
||
}
|
||
Try
|
||
{
|
||
$Date=[DateTime]$StartDate
|
||
if($Date -ge $MaxStartDate)
|
||
{
|
||
break
|
||
}
|
||
else
|
||
{
|
||
Write-Host `nAudit can be retrieved only for the past 180 days. Please select a date after $MaxStartDate -ForegroundColor Red
|
||
return
|
||
}
|
||
}
|
||
Catch
|
||
{
|
||
Write-Host `nNot a valid date -ForegroundColor Red
|
||
}
|
||
}
|
||
|
||
|
||
#Getting end date to audit MS Teams channel creations
|
||
While($true)
|
||
{
|
||
if ($EndDate -eq $null)
|
||
{
|
||
$EndDate=Read-Host Enter End time for report generation '(Eg: 12/15/2023)'
|
||
}
|
||
Try
|
||
{
|
||
$Date=[DateTime]$EndDate
|
||
if($EndDate -lt ($StartDate))
|
||
{
|
||
Write-Host End time should be later than start time -ForegroundColor Red
|
||
return
|
||
}
|
||
break
|
||
}
|
||
Catch
|
||
{
|
||
Write-Host `nNot a valid date -ForegroundColor Red
|
||
}
|
||
}
|
||
|
||
$OutputCSV=".\Audit_MSTeams_Channel_Creations_$((Get-Date -format yyyy-MMM-dd-ddd` hh-mm` tt).ToString()).csv"
|
||
$IntervalTimeInMinutes=1440 #$IntervalTimeInMinutes=Read-Host Enter interval time period '(in minutes)'
|
||
$CurrentStart=$StartDate
|
||
$CurrentEnd=$CurrentStart.AddMinutes($IntervalTimeInMinutes)
|
||
|
||
#Check whether CurrentEnd exceeds EndDate
|
||
if($CurrentEnd -gt $EndDate)
|
||
{
|
||
$CurrentEnd=$EndDate
|
||
}
|
||
|
||
if($CurrentStart -eq $CurrentEnd)
|
||
{
|
||
Write-Host Start and end time are same.Please enter different time range -ForegroundColor Red
|
||
Exit
|
||
}
|
||
|
||
#Connect_EXO
|
||
$CurrentResultCount=0
|
||
$AggregateResultCount=0
|
||
Write-Host `nAuditing Microsoft Teams channel creations from $StartDate to $EndDate... -ForegroundColor Cyan
|
||
$ProcessedAuditCount=0
|
||
$OutputEvents=0
|
||
$ExportResult=""
|
||
$ExportResults=@()
|
||
$Operations="ChannelAdded"
|
||
|
||
if($CreatedByExternalUsersOnly.IsPresent)
|
||
{
|
||
$UserIds="*#EXT*"
|
||
}
|
||
elseif($CreatedBy -ne "")
|
||
{
|
||
$UserIds=$CreatedBy
|
||
}
|
||
else
|
||
{
|
||
$UserIds="*"
|
||
}
|
||
|
||
while($true)
|
||
{
|
||
#Getting audit data for the given time range
|
||
Search-UnifiedAuditLog -StartDate $CurrentStart -EndDate $CurrentEnd -Operations $Operations -UserIds $UserIds -SessionId s -SessionCommand ReturnLargeSet -ResultSize 5000 | ForEach-Object {
|
||
$ResultCount++
|
||
$ProcessedAuditCount++
|
||
$PrintFlag=$true
|
||
Write-Progress -Activity "`n Retrieving Microsoft Teams Channel creations from $CurrentStart to $CurrentEnd.."`n" Processed audit record count: $ProcessedAuditCount"
|
||
$MoreInfo=$_.auditdata
|
||
$Operation=$_.Operations
|
||
$CreatedBy=$_.UserIds
|
||
$AuditData=$_.auditdata | ConvertFrom-Json
|
||
$ResultStatus=$AuditData.ResultStatus
|
||
$EventTime=(Get-Date($AuditData.CreationTime)).ToLocalTime() #Get-Date($AuditData.CreationTime) Uncomment to view the Activity Time in UTC
|
||
$ChannelName=$AuditData.ChannelName
|
||
$TeamName=$AuditData.TeamName
|
||
$ChannelType=$AuditData.ChannelType
|
||
|
||
#Filter private channels
|
||
if(($PrivateChannelsOnly.IsPresent) -and ($ChannelType -ne "Private"))
|
||
{
|
||
return
|
||
}
|
||
|
||
#Filter shared channel creations
|
||
|
||
if(($SharedChannelsOnly.IsPresent) -and ($ChannelType -ne "Shared"))
|
||
{
|
||
return
|
||
}
|
||
|
||
if(($StandardChannelsOnly.IsPresent) -and ($ChannelType -ne "Standard"))
|
||
{
|
||
return
|
||
}
|
||
|
||
|
||
|
||
#Export result to csv
|
||
if($PrintFlag -eq "True")
|
||
{
|
||
$OutputEvents++
|
||
$ExportResult=@{'Creation Time'=$EventTime;'Created By'=$CreatedBy; 'Channel Name'=$ChannelName;'Team Name'=$TeamName;'Channel Type'=$ChannelType;'More Info'=$MoreInfo}
|
||
$ExportResults= New-Object PSObject -Property $ExportResult
|
||
$ExportResults | Select-Object 'Creation Time','Channel Name','Created By','Channel Type','Team Name','More Info' | Export-Csv -Path $OutputCSV -Notype -Append
|
||
}
|
||
}
|
||
$currentResultCount=$currentResultCount+$ResultCount
|
||
|
||
if($CurrentResultCount -ge 50000)
|
||
{
|
||
Write-Host Retrieved max record for current range.Proceeding further may cause data loss or rerun the script with reduced time interval. -ForegroundColor Red
|
||
$Confirm=Read-Host `nAre you sure you want to continue? [Y] Yes [N] No
|
||
if($Confirm -match "[Y]")
|
||
{
|
||
Write-Host Proceeding audit log collection with data loss
|
||
[DateTime]$CurrentStart=$CurrentEnd
|
||
[DateTime]$CurrentEnd=$CurrentStart.AddMinutes($IntervalTimeInMinutes)
|
||
$CurrentResultCount=0
|
||
if($CurrentEnd -gt $EndDate)
|
||
{
|
||
$CurrentEnd=$EndDate
|
||
}
|
||
}
|
||
else
|
||
{
|
||
Write-Host Please rerun the script with reduced time interval -ForegroundColor Red
|
||
Exit
|
||
}
|
||
}
|
||
|
||
if($ResultCount -lt 5000)
|
||
{
|
||
if($CurrentEnd -eq $EndDate)
|
||
{
|
||
break
|
||
}
|
||
$CurrentStart=$CurrentEnd
|
||
if($CurrentStart -gt (Get-Date))
|
||
{
|
||
break
|
||
}
|
||
$CurrentEnd=$CurrentStart.AddMinutes($IntervalTimeInMinutes)
|
||
$CurrentResultCount=0
|
||
if($CurrentEnd -gt $EndDate)
|
||
{
|
||
$CurrentEnd=$EndDate
|
||
}
|
||
}
|
||
$ResultCount=0
|
||
}
|
||
|
||
#Open output file after execution
|
||
If($OutputEvents -eq 0)
|
||
{
|
||
Write-Host No records found
|
||
}
|
||
else
|
||
{
|
||
Write-Host `nThe output file contains $OutputEvents audit records
|
||
if((Test-Path -Path $OutputCSV) -eq "True")
|
||
{
|
||
Write-Host `n "The Output file availble in:" -NoNewline -ForegroundColor Yellow; Write-Host "$OutputCSV" `n
|
||
$Prompt = New-Object -ComObject wscript.shell
|
||
$UserInput = $Prompt.popup("Do you want to open output file?",`
|
||
0,"Open Output File",4)
|
||
If ($UserInput -eq 6)
|
||
{
|
||
Invoke-Item "$OutputCSV"
|
||
}
|
||
}
|
||
}
|
||
Write-Host `n~~ Script prepared by AdminDroid Community ~~`n -ForegroundColor Green
|
||
Write-Host "~~ Check out " -NoNewline -ForegroundColor Green; Write-Host "admindroid.com" -ForegroundColor Yellow -NoNewline; Write-Host " to get access to 1800+ Microsoft 365 reports. ~~" -ForegroundColor Green `n`n
|
||
#Disconnect Exchange Online session
|
||
#Disconnect-ExchangeOnline -Confirm:$false -InformationAction Ignore -ErrorAction SilentlyContinue |