-
-
Save MSAdministrator/7b38c1e38c31b3e90b2a3dd8b52b60c8 to your computer and use it in GitHub Desktop.
Get-TargetedWinEvent.ps1
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| function Get-TargetedWinEvent { | |
| <# | |
| .SYNOPSIS | |
| Searches Windows logs for events related to specific Event IDs or EventData.Data values | |
| .DESCRIPTION | |
| Searches Windows logs for events related to specific Event IDs or EventData.Data values | |
| Supports searching offline/exported evt/evtx files as well as online machines | |
| .PARAMETER SearchTerm | |
| EventData.Data property value to search for | |
| .PARAMETER EventId | |
| Windows Event ID to search for | |
| .PARAMETER ComputerName | |
| Remote computer to search logs on | |
| Defaults to $env:COMPUTERNAME | |
| .PARAMETER Credential | |
| Credential used to connect to remote computers if default credentials won't work | |
| .PARAMETER Offline | |
| Switch to search offline/exported logs either locally or remotely | |
| .PARAMETER Path | |
| Path to offline/exported log files | |
| Defaults to "$env:SystemRoot\System32\winevt\Logs" | |
| .PARAMETER Days | |
| Number of days to go back in the search for offline/exported logs | |
| .PARAMETER Flatten | |
| Switch to flatten the EventData.Data values and append them as properties to the parent object | |
| .EXAMPLE | |
| Get-TargetedWinEvent -SearchTerm user.name | |
| Finds local events related to user.name | |
| .EXAMPLE | |
| 'host1','host2' | Get-TargetedWinEvent -SearchTerm user.name -EventId 4624 | |
| Finds successful logon events for user.name from both hosts via the pipeline | |
| .EXAMPLE | |
| Get-TargetedWinEvent -EventId 4624 -SearchTerm user.name -Offline -Path \\server\share\LogArchive | |
| Finds successful logon events for user.name in all archived log files under \\server\share\LogArchive | |
| .NOTES | |
| ####################################################################################### | |
| Author: @oregon-national-guard/systems-administration | |
| Version: 1.0 | |
| ####################################################################################### | |
| License: https://github.com/oregon-national-guard/powershell/blob/master/LICENCE | |
| ####################################################################################### | |
| .LINK | |
| https://github.com/oregon-national-guard | |
| .LINK | |
| https://creativecommons.org/publicdomain/zero/1.0/ | |
| #> | |
| [CmdletBinding(DefaultParameterSetName='Online')] | |
| param ( | |
| [Parameter(ParameterSetName='Online')] | |
| [Parameter(ParameterSetName='Offline')] | |
| [string] | |
| $SearchTerm, | |
| [Parameter(ParameterSetName='Online')] | |
| [Parameter(ParameterSetName='Offline')] | |
| [string] | |
| $EventId, | |
| [Parameter(ParameterSetName='Online',ValueFromPipeline=$true,ValueFromPipelineByPropertyName=$true)] | |
| [Alias('PSComputerName','DNSHostName','CN','Hostname')] | |
| [System.Object[]] | |
| $ComputerName, | |
| [Parameter(ParameterSetName='Online')] | |
| [ValidateNotNull()] | |
| [System.Management.Automation.PSCredential] | |
| [System.Management.Automation.Credential()] | |
| $Credential = [System.Management.Automation.PSCredential]::Empty, | |
| [Parameter(Mandatory=$true,ParameterSetName='Offline')] | |
| [switch] | |
| $Offline, | |
| [Parameter(ParameterSetName='Offline',ValueFromPipeline=$true,ValueFromPipelineByPropertyName=$true)] | |
| [Alias('PSPath','FullName','LogFilePath')] | |
| [System.Object[]] | |
| $Path, | |
| [Parameter(ParameterSetName='Offline')] | |
| [int] | |
| $Days, | |
| [Parameter(ParameterSetName='Online')] | |
| [Parameter(ParameterSetName='Offline')] | |
| [switch] | |
| $Flatten | |
| ) #param | |
| begin { | |
| Write-Debug -Message 'start of private function definitions' | |
| function FlattenWinEvent { | |
| [CmdletBinding()] | |
| param ( | |
| [Parameter(ValueFromPipeline=$true)] | |
| [System.Diagnostics.Eventing.Reader.EventLogRecord[]] | |
| $EventLogRecord | |
| ) #param | |
| process { | |
| $EventLogRecord | ForEach-Object { | |
| $EventXml = [xml]$_.ToXml() | |
| $XmlData = $null | |
| if ($XmlData = @($EventXml.Event.EventData.Data)) { | |
| for ($i=0; $i -lt $XmlData.Count; $i++) { | |
| $SplatArgs = @{ | |
| InputObject = $_ | |
| MemberType = "NoteProperty" | |
| Name = "$($XmlData[$i].name)" | |
| Value = "$($XmlData[$i].'#text')" | |
| Force = $true | |
| Passthru = $true | |
| } | |
| $_ = Add-Member @SplatArgs | |
| } #for | |
| } #if | |
| $_ | |
| } #ForEach EventLogRecord | |
| } #process | |
| } #function FlattenWinEvent | |
| Write-Debug -Message 'end of private function definitions' | |
| Write-Debug -Message 'start detecting which parameters were bound at runtime' | |
| if ($PSBoundParameters.ContainsKey('EventId')) { | |
| $Id = $true | |
| } elseif (-not ($PSBoundParameters.ContainsKey('EventId'))) { | |
| $Id = $false | |
| } #if | |
| if ($PSBoundParameters.ContainsKey('SearchTerm')) { | |
| $Search = $true | |
| } elseif (-not ($PSBoundParameters.ContainsKey('SearchTerm'))) { | |
| $Search = $false | |
| } #if | |
| if ($PSBoundParameters.ContainsKey('ComputerName')) { | |
| $Computer = $true | |
| } elseif (-not ($PSBoundParameters.ContainsKey('ComputerName'))) { | |
| $Computer = $false | |
| } #if | |
| if ($PSBoundParameters.ContainsKey('Credential')) { | |
| $Creds = $true | |
| } elseif (-not ($PSBoundParameters.ContainsKey('Credential'))) { | |
| $Creds = $false | |
| } #if | |
| Write-Debug -Message 'end detecting which parameters were bound at runtime' | |
| Write-Debug -Message 'start setting default parameter values' | |
| if (-not $Computer) { | |
| $ComputerName = $env:COMPUTERNAME | |
| } #if | |
| if (-not ($PSBoundParameters.ContainsKey('Days'))) { | |
| $Days = 1 | |
| } #if | |
| if (($PSCmdlet.ParameterSetName -match 'Offline') -and (-not ($PSBoundParameters.ContainsKey('Path')))) { | |
| Write-Debug -Message 'No $Path supplied. Using "$env:SystemRoot\System32\winevt\Logs"' | |
| $Path = "$env:SystemRoot\System32\winevt\Logs" | |
| } #if | |
| Write-Debug -Message 'end setting default parameter values' | |
| } #begin | |
| process { | |
| if ($PSCmdlet.ParameterSetName -match 'Online') { | |
| Write-Verbose -Message 'Running in "Online" mode' | |
| Write-Debug -Message 'start building "Here-Strings" for query XML' | |
| if ($Id -and $Search) { | |
| $QueryString = @" | |
| <QueryList> | |
| <Query Id="0" Path="Security"> | |
| <Select Path="Security"> | |
| *[System[Provider[@Name='Microsoft-Windows-Security-Auditing'] and (EventID=$EventId)]] | |
| and | |
| *[EventData[Data and (Data='$SearchTerm')]] | |
| </Select> | |
| </Query> | |
| </QueryList> | |
| "@ | |
| } elseif ($Id -and (-not $Search)) { | |
| $QueryString = @" | |
| <QueryList> | |
| <Query Id="0" Path="Security"> | |
| <Select Path="Security"> | |
| *[System[Provider[@Name='Microsoft-Windows-Security-Auditing'] and (EventID=$EventId)]] | |
| </Select> | |
| </Query> | |
| </QueryList> | |
| "@ | |
| } elseif ((-not $Id) -and $Search) { | |
| $QueryString = @" | |
| <QueryList> | |
| <Query Id="0" Path="Security"> | |
| <Select Path="Security"> | |
| *[System[Provider[@Name='Microsoft-Windows-Security-Auditing']]] | |
| and | |
| *[EventData[Data and (Data='$SearchTerm')]] | |
| </Select> | |
| </Query> | |
| </QueryList> | |
| "@ | |
| } elseif ((-not $Id) -and (-not $Search)) { | |
| $QueryString = @" | |
| <QueryList> | |
| <Query Id="0" Path="Security"> | |
| <Select Path="Security"> | |
| *[System[Provider[@Name='Microsoft-Windows-Security-Auditing']]] | |
| </Select> | |
| </Query> | |
| </QueryList> | |
| "@ | |
| } #if ($Id -and $Search) | |
| Write-Debug -Message 'end building "Here-Strings" for query XML' | |
| $QueryXml = [xml]$QueryString | |
| $ComputerName | ForEach-Object { | |
| $EachComputer = $_ | |
| if (-not $Computer) { | |
| $SplatArgs = @{ | |
| FilterXml = $QueryXml | |
| ErrorAction = [System.Management.Automation.ActionPreference]::SilentlyContinue | |
| } | |
| if (-not $Flatten) { | |
| Get-WinEvent @SplatArgs | |
| } elseif ($Flatten) { | |
| Get-WinEvent @SplatArgs | FlattenWinEvent | |
| } #if | |
| } elseif ($Computer -and (-not $Creds)) { | |
| $SplatArgs = @{ | |
| ComputerName = $EachComputer | |
| FilterXml = $QueryXml | |
| ErrorAction = [System.Management.Automation.ActionPreference]::SilentlyContinue | |
| } | |
| if (-not $Flatten) { | |
| Get-WinEvent @SplatArgs | |
| } elseif ($Flatten) { | |
| Get-WinEvent @SplatArgs | FlattenWinEvent | |
| } #if | |
| } elseif ($Computer -and $Creds) { | |
| $SplatArgs = @{ | |
| ComputerName = $EachComputer | |
| FilterXml = $QueryXml | |
| Credential = $Credential | |
| ErrorAction = [System.Management.Automation.ActionPreference]::SilentlyContinue | |
| } | |
| if (-not $Flatten) { | |
| Get-WinEvent @SplatArgs | |
| } elseif ($Flatten) { | |
| Get-WinEvent @SplatArgs | FlattenWinEvent | |
| } #if | |
| } #if | |
| } #ForEach ComputerName | |
| } elseif ($PSCmdlet.ParameterSetName -match 'Offline') { | |
| Write-Verbose -Message 'Running in "Offline" mode' | |
| $Path | ForEach-Object { | |
| Write-Verbose -Message "looking for evt or evtx files in $_" | |
| $EachPath = $_ | Get-Item | |
| if (-not $EachPath.PSIsContainer) { | |
| $LogFiles = $EachPath | Where-Object { $_.Name -match '\.(evt|evtx)$' } | |
| } elseif ($EachPath.PSIsContainer) { | |
| $LogFiles = $EachPath | Get-ChildItem | Where-Object { | |
| $_.Name -match '\.(evt|evtx)$' -and | |
| $_.LastWriteTime -ge (Get-Date).AddDays(-$Days) | |
| } | |
| } #if | |
| $LogFiles | ForEach-Object { | |
| Write-Verbose -Message "now processing $($_.Name)" | |
| Write-Debug -Message 'start building "Here-Strings" for query XML' | |
| if ($Id -and $Search) { | |
| $QueryString = @" | |
| <QueryList> | |
| <Query Id="0" Path="file://$($_.FullName)"> | |
| <Select Path="file://$($_.FullName)"> | |
| *[System[(EventID=$EventId)]] | |
| and | |
| *[EventData[Data and (Data='$SearchTerm')]] | |
| </Select> | |
| </Query> | |
| </QueryList> | |
| "@ | |
| } elseif ($Id -and (-not $Search)) { | |
| $QueryString = @" | |
| <QueryList> | |
| <Query Id="0" Path="file://$($_.FullName)"> | |
| <Select Path="file://$($_.FullName)"> | |
| *[System[(EventID=$EventId)]] | |
| </Select> | |
| </Query> | |
| </QueryList> | |
| "@ | |
| } elseif ((-not $Id) -and $Search) { | |
| $QueryString = @" | |
| <QueryList> | |
| <Query Id="0" Path="file://$($_.FullName)"> | |
| <Select Path="file://$($_.FullName)"> | |
| *[EventData[Data and (Data='$SearchTerm')]] | |
| </Select> | |
| </Query> | |
| </QueryList> | |
| "@ | |
| } elseif ((-not $Id) -and (-not $Search)) { | |
| $QueryString = @" | |
| <QueryList> | |
| <Query Id="0" Path="file://$($_.FullName)"> | |
| <Select Path="file://$($_.FullName)"> | |
| </Select> | |
| </Query> | |
| </QueryList> | |
| "@ | |
| } #if ($Id -and $Search) | |
| Write-Debug -Message 'end building "Here-Strings" for query XML' | |
| $QueryXml = [xml]$QueryString | |
| $SplatArgs = @{ | |
| FilterXml = $QueryXml | |
| Oldest = $true | |
| ErrorAction = [System.Management.Automation.ActionPreference]::SilentlyContinue | |
| } | |
| if (-not $Flatten) { | |
| Get-WinEvent @SplatArgs | |
| } elseif ($Flatten) { | |
| Get-WinEvent @SplatArgs | FlattenWinEvent | |
| } #if | |
| } #ForEach LogFile | |
| } #ForEach Path | |
| } #if ($PSCmdlet.ParameterSetName -match 'Online') | |
| } #process | |
| end {} #end | |
| } #function Get-TargetedWinEvent |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment