Public/Get-ALHADLockedOutUser.ps1
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<#PSScriptInfo
.VERSION 1.2.0 .GUID 2d7def26-aa85-4328-9e02-6c7ed0068024 .AUTHOR Dieter Koch .COMPANYNAME .COPYRIGHT (c) 2021-2023 Dieter Koch .TAGS .LICENSEURI https://github.com/admins-little-helper/ALH/blob/main/LICENSE .PROJECTURI https://github.com/admins-little-helper/ALH .ICONURI .EXTERNALMODULEDEPENDENCIES .REQUIREDSCRIPTS .EXTERNALSCRIPTDEPENDENCIES .RELEASENOTES 1.0.0 - Initial release 1.1.0 - Made script accept values for paramter ComputerName from pipeline. 1.2.0 - Added parameter 'TimeRange' to allow more user-friendly input #> <# .DESCRIPTION Contains a function to query the securtiy event log for event id 4740 which is logged in case a user account gets locked out. #> function Get-ALHADLockedOutUser { <# .SYNOPSIS Function to query the securtiy event log for event id 4740 which is logged in case a user account gets locked out. .DESCRIPTION Function to query the securtiy event log for event id 4740 which is logged in case a user account gets locked out. The function can query one or multiple computers for one, multiple or any user in a given timeframe. This helps to identify the source of the invalid logon attemps because the events contain the source IP address of the logon attempt. .PARAMETER DomainName The AD domain name in which the Domain Controller will be queried, if no value is specified for the -Compuername parameter. .PARAMETER Identity One or more usernames (samAccountName) to search for. If ommited, events for all users ("*") are searched. .PARAMETER StartTime The datetime to start searching from. If ommited, it's set for the last two hours. .PARAMETER ComputerName One or more computernames to search for. If ommited, the script tries to get the domain controller with the PDC emulator role for the current domain or the domain specified with the -DomainName parameter. .PARAMETER Credential Credentials used to query the event log. If ommited, the credentials of the user running the script are used. .EXAMPLE Get-ALHADFailedLogonAttemps Get events for all users in the last 2 hours from the domain ctonroller with the PDC emulator role. .EXAMPLE Get-ALHADFailedLogonAttemps -Identity 'mike' -StartTime (Get-Date).AddHours(-8) Get events for user with samAccountName 'mike' within the last 8 hours. .EXAMPLE Get-ALHADFailedLogonAttemps -StartTime (Get-Date).AddDays(-1) -ComputerName dc1,dc2 Get events for any user within last 24 hours from a computers (Domain Controller) dc1 and dc2. .EXAMPLE Get-ALHADFailedLogonAttemps -Identity 'user1','user2' -StartTime (Get-Date).AddDays(-1) Get events for two users within the last 24 hours from Domain Controller running the PDC role. .EXAMPLE Get-Content -Path C:\Temp\Userlist.txt | Get-ALHADFailedLogonAttemps -StartTime (Get-Date).AddDays(-1) Get events for users from pipeline input within the last 24 hours from Domain Controller running the PDC role. .INPUTS Nothing .OUTPUTS Nothing .NOTES Author: Dieter Koch Email: diko@admins-little-helper.de .LINK https://github.com/admins-little-helper/ALH/blob/main/Help/Get-ALHADLockedOutUser.txt #> [CmdletBinding(DefaultParameterSetName = "default")] param ( [ValidateNotNullOrEmpty()] [string]$DomainName = $env:USERDOMAIN, [Parameter(ValueFromPipeline, HelpMessage = 'Enter one or more user names')] [ValidateNotNullOrEmpty()] [string[]]$Identity, [Parameter(ParameterSetName = "DateTime")] [ValidateNotNullOrEmpty()] [datetime]$StartTime = (Get-Date).AddHours(-2), [Parameter(ParameterSetName = "TimeRange")] [ValidateSet("1h", "2h", "4h", "6h", "8h", "12h", "15h", "18h", "21h", "1d", "2d", "3d", "4d", "5d", "6d", "7d")] [ValidateNotNullOrEmpty()] [string]$TimeRange = "1d", [ValidateNotNullOrEmpty()] [string[]]$ComputerName = [System.DirectoryServices.ActiveDirectory.Domain]::GetDomain((New-Object System.DirectoryServices.ActiveDirectory.DirectoryContext('Domain', $DomainName))).PdcRoleOwner.Name, [ValidateNotNull()] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential = [System.Management.Automation.PSCredential]::Empty ) begin { $RequiredModules = "ActiveDirectory" foreach ($RequiredModule in $RequiredModules) { if (-not [bool](Get-Module -Name $RequiredModule)) { if (-not [bool](Get-Module -Name $RequiredModule -ListAvailable)) { Write-Warning -Message "Module $RequiredModule not found. Stopping function." break } Write-Verbose -Message "Importing $RequiredModule Module" Import-Module ActiveDirectory } } if ($null -eq $Credential -or $Credential.Username -eq '') { $CredentialsOfUser = "$env:USERDOMAIN\$env:USERNAME" } else { $CredentialsOfUser = $Credential.Username } $ComputerTotal = $ComputerName.Count $UserTotal = $Identity.Count if ($PsCmdlet.ParameterSetName -eq "TimeRange") { if ($TimeRange -match "^\d{1,2}[d]$") { $StartTime = (Get-Date).AddDays( - ($TimeRange -replace "d", "")) } elseif ($TimeRange -match "^\d{1,2}[h]$") { $TimeRange -replace "h", "" $StartTime = (Get-Date).AddHours( - ($TimeRange -replace "h", "")) } else { Write-Warning -Message "Not a valid timerange. Using default time range of 2h" $StartTime = (Get-Date).AddHours(-2) } } Write-Information -MessageData "Searching in domain : $DomainName" -InformationAction Continue Write-Information -MessageData "Checking security event log on cmputer(s) : $($Computername -join ';')" -InformationAction Continue Write-Information -MessageData "Search timeframe : $StartTime - $(Get-Date)" -InformationAction Continue Write-Information -MessageData "Running with credentials of user : $CredentialsOfUser" -InformationAction Continue Write-Information -MessageData "Searching for username(s) : $($Identity -join ';')" -InformationAction Continue } process { if ($input) { $UserTotal = $Input.Count } foreach ($computer in $ComputerName) { $i = 0 Write-Progress -Activity "Searching on computer $computer" -PercentComplete ($i / $ComputerTotal * 100) -Status "Progress ->" -CurrentOperation OuterLoop $i++ foreach ($user in $Identity) { $j = 0 Write-Progress -Activity "Searching on computer $computer" -PercentComplete ($j / $UserTotal * 100) -Status "Progress ->" -CurrentOperation InnerLoop $j++ try { Get-WinEvent -ComputerName $computer -FilterHashtable @{LogName = 'Security'; Id = 4740; StartTime = $StartTime } -Credential $Credential -ErrorAction SilentlyContinue ` | Where-Object { $_.Properties[0].Value -like "$user" } ` | Select-Object -Property TimeCreated, ` @{Name = 'UserName'; Expression = { $_.Properties[0].Value } }, ` @{Name = 'ClientName'; Expression = { $_.Properties[1].Value } }, ` @{Name = 'CurrentlyLocked'; Expression = { (Get-ADUser $_.Properties[0].Value -Properties LockedOut).LockedOut } }, ` @{Name = 'Computer'; Expression = { $computer } } ` | Sort-Object -Property Username, TimeCreated } catch { Write-Error $_ } } } } end { <# if ($($LockedOutUsers | Measure-Object).Count -eq 0) { Write-Information -MessageData "`n`nNo records found matching search criteria. Try extending the timeframe.`n" -InformationAction Continue } else { $LockedOutUsers } #> } } #region EndOfScript <# ################################################################################ ################################################################################ # # ______ _ __ _____ _ _ # | ____| | | / _| / ____| (_) | | # | |__ _ __ __| | ___ | |_ | (___ ___ _ __ _ _ __ | |_ # | __| | '_ \ / _` | / _ \| _| \___ \ / __| '__| | '_ \| __| # | |____| | | | (_| | | (_) | | ____) | (__| | | | |_) | |_ # |______|_| |_|\__,_| \___/|_| |_____/ \___|_| |_| .__/ \__| # | | # |_| ################################################################################ ################################################################################ # created with help of http://patorjk.com/software/taag/ #> #endregion |