CYB3RTools.psm1
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function Set-ConsoleTitle { <# .SYNOPSIS Sets the console window title to the defined text. .DESCRIPTION Sets the console window title to the defined text. .PARAMETER TitleText New title text. .EXAMPLE C:\PS> Set-ConsoleTitle -TitleText '<<<This window is for installation>>>' Configures the current console window title text to <<<This window is for installation>>> #> [cmdletbinding()] param( [Parameter(Mandatory = $true, HelpMessage = 'Enter new console title.')][ValidateNotNullOrEmpty()][string]$TitleText ) $host.ui.RawUI.WindowTitle = $TitleText } function Save-ScreenCapture { <# .SYNOPSIS Takes the screeshot of all displays to bmp file. .DESCRIPTION Takes the screeshot of all displays to bmp file. You can define duration for which screeshots should be taken and how long it should wait before each screeshoting cycle. .PARAMETER OutputFolder Output folder to store final screenshots in BMP format. .PARAMETER RepetitionDurationSeconds Duration in seconds for how long screenshots should be taken. .PARAMETER RepetitionWaitMilliseconds Duration in milliseconds for how long the script should wait before each screenshotting cycle during the defined RepetitionDurationSeconds. .EXAMPLE C:\PS> Save-ScreenCapture Initiates single screenshot for each display and save outputs to the TEMP folder. .EXAMPLE C:\PS> Save-ScreenCapture -OutputFolder 'C:\Users\Foo\AppData\Local\SCRs' -RepetitionDurationSeconds 3600 -RepetitionWaitMilliseconds 300000 Initiates screenshotting to run for 1 hour with 5 minutes waiting interval and saves output files to the folder C:\Users\Foo\AppData\Local\SCRs #> [CmdletBinding()] param( [string]$OutputFolder = "$env:Temp", [int]$RepetitionDurationSeconds = 0, [int]$RepetitionWaitMilliseconds = 0 ) Add-Type -AssemblyName System.Windows.Forms if (!(Test-Path $OutputFolder)) { New-Item $OutputFolder -ItemType Directory -Force | Out-Null } $stopwatch = [System.Diagnostics.Stopwatch]::StartNew() do { foreach ($SingleScreen in $([System.Windows.Forms.Screen]::AllScreens | Sort-Object -Property DeviceName)) { [string]$SingleScreeDeviceName = $SingleScreen.DeviceName.TrimStart('\\').split('\')[-1] Write-Verbose "Taking screenshot from $SingleScreeDeviceName" $filename = "SCR-$((Get-Date).ToString('yyyyMMdd-HHmmss-fff'))-$SingleScreeDeviceName.bmp" $outputpath = Join-Path $OutputFolder $fileName $BitmapObj = New-Object System.Drawing.Bitmap($SingleScreen.Bounds.Width, $SingleScreen.Bounds.Height) $GraphicsObj = [System.Drawing.Graphics]::FromImage($BitmapObj) $GraphicsObj.CopyFromScreen($SingleScreen.Bounds.X, $SingleScreen.Bounds.Y, 0, 0, $SingleScreen.Bounds.Size, [System.Drawing.CopyPixelOperation]::SourceCopy) $GraphicsObj.Dispose() $BitmapObj.Save($outputpath) } if ([int]$($stopwatch.Elapsed.TotalMilliseconds) -le $($RepetitionDurationSeconds * 1000)) { Start-Sleep -Milliseconds $RepetitionWaitMilliseconds } } until ( [int]$($stopwatch.Elapsed.TotalMilliseconds) -gt $($RepetitionDurationSeconds * 1000) ) } function Find-ItemADS { <# .SYNOPSIS Finds Alternate Data Streams in files in specific folder(s). .DESCRIPTION Finds Alternate Data Streams in files in specific folder(s). .PARAMETER Path Location where to find alternate data streams. .PARAMETER Recurse Gets alternate data streams in the specified location and in all child items of the location. .EXAMPLE Find-ItemADS -Path C:\Temp -Recurse This example finds alternate data streams in files that are located in the C:\Temp directory and its subdirectories. #> [CmdletBinding()] Param( [ValidateScript( { if (!$($_ | Test-Path) ) { throw "Folder does not exist" } if (!$($_ | Test-Path -PathType Container) ) { throw "The Path argument must be a Folder." } return $true })] [Parameter(Mandatory)] [System.IO.FileInfo]$Path, [switch]$Recurse, [switch]$ShowContent ) if ($Recurse) { $ObjectsToAnalyze = Get-ChildItem -Path $Path -Recurse } else { $ObjectsToAnalyze = Get-ChildItem -Path $Path } foreach ($ObjectToAnalyze in $ObjectsToAnalyze) { if ($ShowContent) { $ObjectToAnalyze | Get-Item -Stream * | Where-Object { $_.stream -ne ':$DATA' } | Select-Object -Property FileName, Stream, Length, @{n = 'Content'; e = { return $(Get-Content -Path "$($_.FileName):$($_.stream)") } } } else { $ObjectToAnalyze | Get-Item -Stream * | Where-Object { $_.stream -ne ':$DATA' } | Select-Object -Property FileName, Stream, Length } } } function New-ItemADS { <# .SYNOPSIS Creates Alternate Data Streams in specific files or folders. .DESCRIPTION Creates Alternate Data Streams in specific files or folders. .PARAMETER Stream Name of alternate data stream. .PARAMETER Content Content of the alternate data stream. .PARAMETER ContentEncoding Specified the content encoding type. .PARAMETER ItemType Type of item to hold the alternate data stream. .PARAMETER Path Path for the existing file or folder to hold the alternate data stream. .EXAMPLE New-ItemADS -Path 'C:\Temp' -Name 'ADSFile.txt' -StreamName 'Secrets' -StreamContent 'This is secret content' -ContentEncoding Ascii -ItemType File Creates file ADSFile.txt in C:\Temp with alternate data stream Secrets. .EXAMPLE New-ItemADS -Path 'C:\Temp' -Name 'ADSFolder' -StreamName 'Secrets' -StreamContent 'This is secret content' -ContentEncoding Ascii -ItemType Directory Creates directory ADSFolder in C:\Temp with alternate data stream Secrets. .EXAMPLE New-ItemADS -Path 'C:\Temp' -Name 'ADSFileWithBinary.txt' -StreamName 'SecretBinary' -StreamContent ([System.IO.File]::ReadAllBytes("C:\Source\Coreinfo.exe")) -ContentEncoding Byte -ItemType File Creates file with ADS containing CoreInfo.exe binary in alternate data stream Secrets. #> [CmdletBinding()] param ( [Parameter(Mandatory)][string]$StreamName, [Parameter(Mandatory)]$StreamContent, [Parameter(Mandatory)][ValidateSet('Ascii', 'Byte', 'UTF8')][string]$ContentEncoding, [Parameter(Mandatory)][ValidateSet('File', 'Directory')][string]$ItemType, [ValidateScript( { if (!$($_ | Test-Path) ) { throw "Path does not exist" } return $true })] [System.IO.FileInfo]$Path, [Parameter(Mandatory)][string]$Name ) $FullName = Join-Path $Path $Name if ($ItemType -eq 'Directory') { if (Test-Path $FullName) { throw ('Item {0} already exists.' -f $FullName) } New-Item $FullName -ItemType Directory -Force | Out-Null } Set-Content $('{0}:{1}' -f $FullName, $StreamName) -Value $StreamContent -Encoding $ContentEncoding } function Watch-Defense { <# .SYNOPSIS Waits until detects potential monitoring or analysis tool. .DESCRIPTION Waits until detects potential monitoring or analysis tool. #> [cmdletbinding()] param() $JobName = Get-Random Register-WMIEvent -Query "SELECT * FROM __InstanceCreationEvent WITHIN 3 WHERE TargetInstance ISA 'Win32_Process' AND (TargetInstance.Name = 'mmc.exe' OR TargetInstance.Name = 'taskmgr.exe' OR TargetInstance.Name = 'procexp.exe' OR TargetInstance.Name = 'procexp64.exe')"` -sourceIdentifier "WatchDefense$JobName" -action { 'Detected' } | out-null Write-Verbose "Watching defense processes..." do { Start-Sleep -Seconds 1 } until ($(Get-Job -Name "WatchDefense$JobName" | Select-Object -ExpandProperty HasMoreData) -eq $true) Write-Verbose "Defense Detected!" Get-Job -Name "WatchDefense$JobName" | stop-job -passthru | remove-job -Force } function Enable-PSTranscription { [CmdletBinding()] param($OutputDirectory, [Switch] $IncludeInvocationHeader) [string]$RegistryPath = "HKLM:\Software\Policies\Microsoft\Windows\PowerShell\Transcription" if (!$(Test-Path $RegistryPath)) { $null = New-Item $RegistryPath -Force } Set-ItemProperty $RegistryPath -Name EnableTranscripting -Value 1 if ($PSCmdlet.MyInvocation.BoundParameters.ContainsKey("OutputDirectory")) { Set-ItemProperty $RegistryPath -Name OutputDirectory -Value $OutputDirectory } if ($IncludeInvocationHeader) { Set-ItemProperty $RegistryPath -Name IncludeInvocationHeader -Value 1 } } function Disable-PSTranscription { Remove-Item HKLM:\Software\Policies\Microsoft\Windows\PowerShell\Transcription -Force -Recurse } function Enable-PSScriptBlockLogging { [string]$RegistryPath = "HKLM:\Software\Policies\Microsoft\Windows\PowerShell\ScriptBlockLogging" if (!$(Test-Path $RegistryPath)) { $null = New-Item $RegistryPath -Force } Set-ItemProperty $RegistryPath -Name EnableScriptBlockLogging -Value "1" } function Disable-PSScriptBlockLogging { Remove-Item 'HKLM:\Software\Policies\Microsoft\Windows\PowerShell\ScriptBlockLogging' -Force -Recurse } function Enable-PSScriptBlockInvocationLogging { [string]$RegistryPath = "HKLM:\Software\Policies\Microsoft\Windows\PowerShell\ScriptBlockLogging" if (!$(Test-Path $RegistryPath)) { $null = New-Item $RegistryPath -Force } Set-ItemProperty $RegistryPath -Name EnableScriptBlockInvocationLogging -Value "1" } function Disable-PSScriptBlockInvocationLogging { [string]$RegistryPath = "HKLM:\Software\Policies\Microsoft\Windows\PowerShell\ScriptBlockLogging" if (!$(Test-Path $RegistryPath)) { $null = New-Item $RegistryPath -Force } Set-ItemProperty $RegistryPath -Name EnableScriptBlockInvocationLogging -Value "0" } function Disable-ExecutionPolicy { ($ctx = $ExecutionContext.GetType().getfield("_context","nonpublic,instance").getvalue($ExecutionContext)).gettype().getfield("_authorizationManager","nonpublic,instance").setvalue($ctx, (New-Object System.Management.Automation.AuthorizationManager "Microsoft.PowerShell")) } function Send-FileLinesToAzLA { [cmdletbinding()] param( [Parameter(Mandatory = $true)][string]$AzLAWorkspaceID, [Parameter(Mandatory = $true)][string]$AzLAPrimaryKey, [Parameter(Mandatory = $true)][string]$AzLACustomLogName, [Parameter(Mandatory = $true)][string]$FilePath, [int]$Paging = 1000 ) Function Build-Signature ($customerId, $sharedKey, $date, $contentLength, $method, $contentType, $resource) { #function source: https://docs.microsoft.com/cs-cz/azure/azure-monitor/platform/data-collector-api $xHeaders = "x-ms-date:" + $date $stringToHash = $method + "`n" + $contentLength + "`n" + $contentType + "`n" + $xHeaders + "`n" + $resource $bytesToHash = [Text.Encoding]::UTF8.GetBytes($stringToHash) $keyBytes = [Convert]::FromBase64String($sharedKey) $sha256 = New-Object System.Security.Cryptography.HMACSHA256 $sha256.Key = $keyBytes $calculatedHash = $sha256.ComputeHash($bytesToHash) $encodedHash = [Convert]::ToBase64String($calculatedHash) $authorization = 'SharedKey {0}:{1}' -f $customerId, $encodedHash return $authorization } Function Post-LogAnalyticsData ($customerId, $sharedKey, $POSTBody, $logType, $TimeStampField = "") { #function source: https://docs.microsoft.com/cs-cz/azure/azure-monitor/platform/data-collector-api $method = "POST" $contentType = "application/json" $resource = "/api/logs" $rfc1123date = [DateTime]::UtcNow.ToString("r") $contentLength = $POSTBody.Length $signature = Build-Signature ` -customerId $customerId ` -sharedKey $sharedKey ` -date $rfc1123date ` -contentLength $contentLength ` -method $method ` -contentType $contentType ` -resource $resource $uri = "https://" + $customerId + ".ods.opinsights.azure.com" + $resource + "?api-version=2016-04-01" $headers = @{ "Authorization" = $signature; "Log-Type" = $logType; "x-ms-date" = $rfc1123date; "time-generated-field" = $TimeStampField; } $response = Invoke-WebRequest -Uri $uri -Method $method -ContentType $contentType -Headers $headers -Body $POSTBody -UseBasicParsing return $response.StatusCode } function Send-DataToAzureLA { [cmdletbinding()] param ( [string]$LogName, $Data, [string]$WorkspaceID, [string]$WorkspaceKey) $DataJSON = $Data | ConvertTo-JSON $DataJSONBytes = [System.Text.Encoding]::UTF8.GetBytes($DataJSON) $postresult = Post-LogAnalyticsData -customerId $WorkspaceID -sharedKey $WorkspaceKey -logType $LogName -PostBody $DataJSONBytes return $postresult } Write-Host "$(get-date -Format s) Started" -ForegroundColor white -BackgroundColor blue $objects_paged = New-Object -TypeName System.Collections.ArrayList $LineNumber = 1 $PreviousSendLineNumber = 0 [System.IO.File]::ReadLines($FilePath) | ForEach-Object { Write-Verbose "Processing line $LineNumber" Remove-Variable -Name obj -ErrorAction SilentlyContinue Remove-Variable -Name objProps -ErrorAction SilentlyContinue if (!$($_ -eq $null -or $_ -eq '')) { $objProps = @{ FileName = $(Get-Item $FilePath | Select-Object -ExpandProperty Name) FileLine = $_ } $obj = New-Object -TypeName psobject -ArgumentList $objProps $objects_paged.Add($obj) | Out-Null } if ($LineNumber%$Paging -eq 0) { Write-Host "$(get-date -Format s) Sending $($PreviousSendLineNumber+1) - $LineNumber lines to AzLA..." -ForegroundColor black -BackgroundColor Yellow $result = Send-DataToAzureLA -Data $objects_paged -LogName $AzLACustomLogName -WorkspaceID $AzLAWorkspaceID -WorkspaceKey $AzLAPrimaryKey if ($result -ne 200) { throw "$(get-date -Format s) Error Sending Data to Azure Log Analytics" } else { Write-Host "$(get-date -Format s) `tSuccessfully completed." -ForegroundColor black -BackgroundColor green } $objects_paged.Clear() $PreviousSendLineNumber = $LineNumber } $LineNumber++ } #remaining paged objects Write-Host "$(get-date -Format s) Sending $($PreviousSendLineNumber+1) - $LineNumber lines to AzLA..." -ForegroundColor black -BackgroundColor Yellow $result = Send-DataToAzureLA -Data $objects_paged -LogName $AzLACustomLogName -WorkspaceID $AzLAWorkspaceID -WorkspaceKey $AzLAPrimaryKey if ($result -ne 200) { throw "$(get-date -Format s) Error Sending Data to Azure Log Analytics" } else { Write-Host "$(get-date -Format s) `tSuccessfully completed." -ForegroundColor black -BackgroundColor green } Write-Host "$(get-date -Format s) Completed." -ForegroundColor white -BackgroundColor blue } function Test-Credentials { [CmdletBinding()] [OutputType([bool])] Param ( [Parameter(ValueFromPipeLine = $true,ValueFromPipelineByPropertyName = $true)] [Alias('PSCredential')] [ValidateNotNull()] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credentials ) $Domain = $null if ($Credentials -eq $null) { throw "Failed to validate credentials." } try { $Domain = New-Object System.DirectoryServices.DirectoryEntry(("LDAP://" + ([ADSI]'').distinguishedName), $credentials.username, $credentials.GetNetworkCredential().password) } catch { $_.Exception.Message Continue } if (!$domain) { throw "Unexpected Error" } else { if ($null -ne $domain.name) { return $true } else { return $false } } } function Test-RunningAsAdministrator { ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator") } function Get-ForensicProcess { [CmdletBinding()] param( [ValidateSet("MACTripleDES", "MD5", "RIPEMD160", "SHA1", "SHA256", "SHA384", "SHA512")] [string]$Algorithm, [ValidateNotNullOrEmpty()] [string]$Name ) if (-not (Test-RunningAsAdministrator)) { Write-Warning 'To be able to read all properties, we suggest to run this command as an administrator' } if ($Name) { $Processes = Get-WmiObject Win32_Process -DirectRead | Where-Object {$_.name -eq $Name} } else { $Processes = Get-WmiObject Win32_Process -DirectRead } if (($Processes | Measure-Object | Select-Object -ExpandProperty Count) -lt 1) { throw ('Cannot find a process with the name "{0}". Verify the process name and call the cmdlet again.' -f $Name) } $CollectionDateTime = [datetime]::UtcNow $Computer = [System.Net.Dns]::GetHostByName($env:computerName).HostName $Processes | Select-Object -Property ` @{n = 'Computer'; e = { $Computer } }, ` @{n = 'CollectionDateTime'; e = { $CollectionDateTime } }, ` CommandLine, ExecutablePath, ` Name, ` ParentProcessId, ` ProcessId, ` VirtualSize, ` WorkingSetSize, ` Path, ` SessionId, ` @{n='StartTime';e={[System.Diagnostics.Process]::GetProcessById($_.processid).starttime}}, ` @{n='FileVersion';e={[System.Diagnostics.Process]::GetProcessById($_.processid).fileversion.split(' ')[0]}}, ` @{n='ProductVersion';e={[System.Diagnostics.Process]::GetProcessById($_.processid).ProductVersion.split(' ')[0]}}, ` @{n='Company';e={[System.Diagnostics.Process]::GetProcessById($_.processid).Company}}, ` @{n='WindowStyle';e={[System.Diagnostics.Process]::GetProcessById($_.processid).StartInfo.WindowStyle}}, ` @{n='MainWindowTitle';e={[System.Diagnostics.Process]::GetProcessById($_.processid).MainWindowTitle}}, ` @{Name = "Owner"; Expression = { $ProcessOwner = ''; $ProcessOwner = $_.GetOwner() if ($ProcessOwner.ReturnValue -eq 0) { $ProcessOwner.Domain + "\" + $ProcessOwner.User } } }, ` @{Name = "OwnerSID"; Expression = { $_.GetOwnerSid().Sid } }, ` @{n = 'Hash'; e = { if ($Algorithm) {$(Get-ForensicHash -FilePath $_.Path -Algorithm $Algorithm).Hash.ToString()} } } } function Get-ForensicHash { param ( [Parameter(Mandatory = $true, ParameterSetName = 'Object')] $InputObject, [Parameter(Mandatory = $true, ParameterSetName = 'File')] [string] [ValidateNotNullOrEmpty()] $FilePath, [Parameter(Mandatory = $true, ParameterSetName = 'Text')] [string] [ValidateNotNullOrEmpty()] $Text, [Parameter(ParameterSetName = 'Text')] [string] [ValidateSet('ASCII', 'BigEndianUnicode', 'Default', 'Unicode', 'UTF32', 'UTF7', 'UTF8')] $Encoding = 'Unicode', [Parameter()] [string] [ValidateSet("MACTripleDES", "MD5", "RIPEMD160", "SHA1", "SHA256", "SHA384", "SHA512")] $Algorithm = "SHA256" ) switch ($PSCmdlet.ParameterSetName) { File { try { $null = Resolve-Path -Path $FilePath -ErrorAction Stop $InputObject = [System.IO.File]::OpenRead($FilePath) Get-ForensicHash -InputObject $InputObject -Algorithm $Algorithm } catch { $returnvalue = New-Object -TypeName psobject -Property @{ Algorithm = $Algorithm.ToUpperInvariant() Hash = $null } } } Text { $InputObject = [System.Text.Encoding]::$Encoding.GetBytes($Text) Get-ForensicHash -InputObject $InputObject -Algorithm $Algorithm } Object { if ($InputObject.GetType() -eq [Byte[]] -or $InputObject.GetType().BaseType -eq [System.IO.Stream]) { $hasher = [System.Security.Cryptography.HashAlgorithm]::Create($Algorithm) [Byte[]] $computedHash = $Hasher.ComputeHash($InputObject) [string] $hash = [BitConverter]::ToString($computedHash) -replace '-', '' $returnvalue = New-Object -TypeName psobject -Property @{ Algorithm = $Algorithm.ToUpperInvariant() Hash = $hash } $returnvalue } } } } |