Here is a quick PowerShell scripts to get list of all websites in your Azure Subscription, along with the processes running within each website.

This script also print the VM Instance ID and VM machine Name. Here is the sample output :

Login-AzureRmAccount


$websites = Get-AzureRmResource -ResourceType Microsoft.Web/sites

foreach($website in $websites)
{
    $resoureGroupName = $website.ResourceGroupName  
    $websiteName = $website.Name
    
    Write-Host "Website : " -ForegroundColor Blue -NoNewline
    Write-Host $websiteName -ForegroundColor Red -NoNewline
    Write-Host " in ResourceGroup : " -ForegroundColor Blue -NoNewline
    Write-Host $resoureGroupName -ForegroundColor Red

    $instances = Get-AzureRmResource -ResourceGroupName $resoureGroupName `
                                     -ResourceType Microsoft.Web/sites/instances `
                                     -ResourceName $websiteName `
                                     -ApiVersion 2018-02-01


    foreach($instance in $instances)
    {
        $instanceName = $instance.Name
        Write-Host "`tVM Instance ID : " $instanceName

        try
        {
            $processes = Get-AzureRmResource -ResourceGroupName $resoureGroupName `
                                            -ResourceType Microsoft.Web/sites/instances/processes `
                                            -ResourceName $websiteName/$instanceName `
                                            -ApiVersion 2018-02-01 `
                                            -ErrorAction Ignore 
        }
        catch
        {
               continue 
        }
        

        foreach($process in $processes)
        {
            $exeName = $process.Properties.Name
            Write-Host "`t`tEXE Name `t`t: " $exeName

            $processId = $process.Properties.id
            Write-Host "`t`t`tProcess ID `t: " $processId

            try {                
                $processDetails = Get-AzureRmResource -ResourceGroupName $resoureGroupName `
                                                        -ResourceType Microsoft.Web/sites/instances/processes `
                                                        -ResourceName $websiteName/$instanceName/$processId `
                                                        -ApiVersion 2018-02-01 `
                                                        -ErrorAction Ignore 
                                                        

                Write-Host "`t`t`tFile Name `t: " $processDetails.Properties.file_name
                Write-Host "`t`t`tCMD Line `t: " $processDetails.Properties.command_line
                Write-Host "`t`t`tComputer Name `t: " $processDetails.Properties.environment_variables.COMPUTERNAME
                
            }
            catch {
                
            }
           
        }
    }
}