AutoSpamEmailScan

4.5.1

AutoSpamEmailScan.ps1

                                
<#PSScriptInfo

.VERSION 4.5.1

.GUID 134de175-8fd8-4938-9812-053ba39eed83

.AUTHOR HAO BAN/banhao@gmail.com

.COMPANYNAME

.COPYRIGHT

.TAGS

.LICENSEURI https://github.com/banhao/AutoSpamEmailScan/blob/master/LICENSE

.PROJECTURI

.ICONURI

.EXTERNALMODULEDEPENDENCIES Before you run the script Install the Exchange Web Services Managed API 2.2. https://www.microsoft.com/en-us/download/details.aspx?id=42951 

.REQUIREDSCRIPTS

.EXTERNALSCRIPTDEPENDENCIES

.RELEASENOTES

    Creation Date:  <05/26/2021>

    Purpose/Change: Fixed some bugs

    Creation Date:  <05/19/2021>

    Purpose/Change: Add "BlockedMailSelfRelease" function. If you donnot have ESA/SMA or donott want to use ESA/SMA API to block SPAM sender or release blocked emails from quarantine then please setup "ENABLEESASPAMBL" and "ENABLESELFRELEASE" as "False" in init.conf  

    Creation Date:  <05/13/2021>

    Purpose/Change: Add "slblconfig EXPORT" after update the Cisco Email Security Appliance Spam Quarantine Blacklist.(related to Cisco Bug CSCvx12488)

    ssh PRIVATE KEY must be save in "c:\users\<username>\.ssh\" folder. ".ssh" folder must disable "inheritance" and manually grant "local\SYSTEM" group, "local\Administrators" group "full control" privilege, and current user "read only" privilege.

    Creation Date:  <04/05/2021>

    Purpose/Change: Optimize function CheckRedirectedURL{}

    Creation Date:  <03/25/2021>

    Purpose/Change: Update function CheckRedirectedURL{}

    Creation Date:  <03/19/2021>

    Purpose/Change: Add a new module for Cisco Email Security Appliance Spam Quarantine Blacklist.

    Creation Date:  <11/10/2020>

    Purpose/Change: Move emails to sub-folder when after the checking.

    Creation Date:  <04/03/2020>

    Purpose/Change: Optimize the parameters setting.

    Creation Date:  <04/02/2020>

    Purpose/Change: Add new feature to let the use input the credential just chose "N" when prompt "salt is empty". Add SystemException, fix the broken of the system error.

    Creation Date:  <03/10/2020>

    Purpose/Change: Add a new Function CheckRedirectedURL, this feature is used to detect URLs that try to escape the scan.

    Change "function Submit-URL-Virustotal" to use the VirusTotal API V3

    Creation Date:  <02/11/2020>

    Purpose/Change: Add checkphish.ai API limit error

    Creation Date:  <01/22/2020>

    Purpose/Change: Add a new Function checkphish.ai

    Creation Date:  <10/21/2019>

    Purpose/Change: One funcation name was changed but calls the old name in the program. Update the Bytescout.PDF2HTML.dll to version 10.6.0.3667. It's still a trial version and will expire after 90 days. If you see this error: 

    --------------------------------------------------------------------------------------

    "new-object : Exception calling ".ctor" with "0" argument(s): "Trial period expired."

    +         $extractor = new-object Bytescout.PDF2HTML.HTMLExtractor

    --------------------------------------------------------------------------------------

    That means the DLL file has been expired.

.PRIVATEDATA

.DESCRIPTION AutoSpamEmailScan.ps1 is used to monitor a specific mailbox that in enterprise users can forward suspicious spam emails to a specific mailbox.

    This PowerShell script can monitor the mailbox for any unread emails, grab the URLs and attachments from the emails and submit to virustotal.com, urlscan.io, Google safe browsing and OPSWAT. Script also can extract URLs from a pdf file.

    After the scan finished, script can generate HTML format scan report and auto reply to the senders.

    Script can be run once or loop interval, if  in the init.conf is 0 means script will only run one time else the number is the loop interval seconds.

    Visit https://github.com/banhao/AutoSpamEmailScan to get the init.conf and Bytescout.PDF2HTML.dll, this dll file is used to convert PDF to HTML.

    Please check the License before you download this script, if you don't agree with the License please don't download and use this script. https://github.com/banhao/AutoSpamEmailScan/blob/master/LICENSE

    The Password is base64 encoded and saved in init.conf, following is the example about how to genertae the encoded password:

    "JkPgsiG9Zh0XCvk" is the password.

    "yp9P7" is the salt. make sure salt is the unique string that can't have the same pattern in the password.

    Insert the salt into password where ever you want:

    yp9P7JkPgsiG9Zh0XCvk, JkPgsiG9Zh0XCvkyp9P7, JkPgyp9P7siG9Zh0XCvk, JkPgsiG9Zh0XCyp9P7vk, ...... all these are legitimate.

    Generate the base64 encoded string:

    [Convert]::ToBase64String([System.Text.Encoding]::Unicode.GetBytes("yp9P7JkPgsiG9Zh0XCvk"))

        eQBwADkAUAA3AEoAawBQAGcAcwBpAEcAOQBaAGgAMABYAEMAdgBrAA==

    [Convert]::ToBase64String([System.Text.Encoding]::Unicode.GetBytes("JkPgsiG9Zh0XCvkyp9P7"))

        SgBrAFAAZwBzAGkARwA5AFoAaAAwAFgAQwB2AGsAeQBwADkAUAA3AA==

    [Convert]::ToBase64String([System.Text.Encoding]::Unicode.GetBytes("JkPgyp9P7siG9Zh0XCvk"))

        SgBrAFAAZwB5AHAAOQBQADcAcwBpAEcAOQBaAGgAMABYAEMAdgBrAA==

    [Convert]::ToBase64String([System.Text.Encoding]::Unicode.GetBytes("JkPgsiG9Zh0XCyp9P7vk"))

        SgBrAFAAZwBzAGkARwA5AFoAaAAwAFgAQwB5AHAAOQBQADcAdgBrAA==

    Save the encoded string in the init.conf file.

    Decode the encoded string:

    [System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String("eQBwADkAUAA3AEoAawBQAGcAcwBpAEcAOQBaAGgAMABYAEMAdgBrAA=="))

        yp9P7JkPgsiG9Zh0XCvk

    [System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String("SgBrAFAAZwBzAGkARwA5AFoAaAAwAFgAQwB2AGsAeQBwADkAUAA3AA=="))

        JkPgsiG9Zh0XCvkyp9P7

    [System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String("SgBrAFAAZwB5AHAAOQBQADcAcwBpAEcAOQBaAGgAMABYAEMAdgBrAA=="))

        JkPgyp9P7siG9Zh0XCvk

    [System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String("SgBrAFAAZwBzAGkARwA5AFoAaAAwAFgAQwB5AHAAOQBQADcAdgBrAA=="))

        JkPgsiG9Zh0XCyp9P7vk

    Even someone can get the encoded string from the init.conf and use base64 to decode it, but they don't know the salt, so they still can't get the password directly.

    This PowerShell passed the test in PowerShell version 5.1.16299.1146. Can not run on Powershell version 4 and below.

    PS H:\>host  

    Check the PowerShell version.

#>

#-------------------------------------------------------------------------------------------------------------------------------------------------------

#variables

param ($CREDENTIAL,$SALT)

cls

if ( [string]::IsNullOrEmpty($CREDENTIAL) -and [string]::IsNullOrEmpty($SALT) ){

    $YorN = Read-Host "Do you want to input the Credential? [ y/n ] (Default is y)"

    if ( $YorN -match "[yY]" -or ([string]::IsNullOrEmpty($YorN))){

        $USERNAME = Get-Content .\init.conf | findstr USERNAME |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

        $CREDENTIAL = Get-Credential -credential $USERNAME

        $PASSWORD = $CREDENTIAL.Password

    }else{

        $ENCODEDPASSWORD = Get-Content .\init.conf | findstr PASSWORD |  %{ $_.Split(':')[1]; } | foreach{ $_.ToString().Trim() }

        $USERNAME = Get-Content .\init.conf | findstr USERNAME |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

        if ( [string]::IsNullOrEmpty($SALT) ){

            $YorN = Read-Host "The salt is empty. Do you want to input the salt to decrypt the password? [ y/n ] (Default is y)"

            if ( $YorN -match "[yY]" -or ([string]::IsNullOrEmpty($YorN))){

                $SALT = Read-Host -assecurestring "Please input the salt"

                $PASSWORD = ([System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String($ENCODEDPASSWORD))).Replace($([System.Runtime.InteropServices.Marshal]::PtrToStringAuto([System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($SALT))),"")

            }else{ $PASSWORD = [System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String($ENCODEDPASSWORD)) }

        }else { $PASSWORD = ([System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String($ENCODEDPASSWORD))).Replace($SALT,"") }

    }

}else{

    $ENCODEDPASSWORD = Get-Content .\init.conf | findstr PASSWORD |  %{ $_.Split(':')[1]; } | foreach{ $_.ToString().Trim() }

    $USERNAME = Get-Content .\init.conf | findstr USERNAME |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

    if ( [string]::IsNullOrEmpty($SALT) ){

        $YorN = Read-Host "The salt is empty. Do you want to input the salt to decrypt the password? [ y/n ] (Default is y)"

        if ( $YorN -match "[yY]" -or ([string]::IsNullOrEmpty($YorN))){

            $SALT = Read-Host -assecurestring "Please input the salt"

            $PASSWORD = ([System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String($ENCODEDPASSWORD))).Replace($([System.Runtime.InteropServices.Marshal]::PtrToStringAuto([System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($SALT))),"")

        }else{ $PASSWORD = [System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String($ENCODEDPASSWORD)) }

    }else { $PASSWORD = ([System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String($ENCODEDPASSWORD))).Replace($SALT,"") }

}

$DOMAIN = Get-Content .\init.conf | findstr DOMAIN |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$EMAILADDRESS = Get-Content .\init.conf | findstr EMAILADDRESS |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$EXCHANGESRV = Get-Content .\init.conf | findstr EXCHANGESRV |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$EWSDLLPATH = Get-Content .\init.conf | findstr EWSDLLPATH |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$PDF2HTMLDLLPATH = Get-Content .\init.conf | findstr PDF2HTMLDLLPATH |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$DOWNLOADDIRECTORY =  Get-Content .\init.conf | findstr DOWNLOADDIRECTORY |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$REPORTSDIRECTORY = Get-Content .\init.conf | findstr REPORTSDIRECTORY |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$EXTENSIONARRAY = Get-Content .\init.conf | findstr EXTENSIONARRAY |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$EXEMPTURL = (Get-Content .\init.conf | findstr EXEMPTURL |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }).split(",")

$SUBFOLDER = Get-Content .\init.conf | findstr SUBFOLDER | %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$INTERVAL = [int]$(Get-Content .\init.conf | findstr INTERVAL | %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() })

$ENABLEESASPAMBL  = $(Get-Content .\init.conf | findstr ENABLEESASPAMBL | %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }).ToLower()

$ESAURL1 = Get-Content .\init.conf | findstr ESAURL1 | %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$ESAURL2 = Get-Content .\init.conf | findstr ESAURL2 | %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$PRIVATEKEY = Get-Content .\init.conf | findstr PRIVATEKEY | %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$HOST1 = $([System.Uri]$ESAURL1).Host

$HOST2 = $([System.Uri]$ESAURL2).Host

$ENABLESELFRELEASE = $(Get-Content .\init.conf | findstr ENABLESELFRELEASE | %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }).ToLower()

$SMAURL = Get-Content .\init.conf | findstr SMAURL | %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$QUARANTINENAME = Get-Content .\init.conf | findstr QUARANTINENAME | %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$SMA = $([System.Uri]$SMAURL).Host

$VIRUSTOTAL_API_KEY = Get-Content .\init.conf | findstr VIRUSTOTAL_API_KEY |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$URLSCAN_API_KEY = Get-Content .\init.conf | findstr URLSCAN_API_KEY |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$GOOGLE_API_KEY = Get-Content .\init.conf | findstr GOOGLE_API_KEY |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$OPSWAT_API_KEY = Get-Content .\init.conf | findstr OPSWAT_API_KEY |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

$CHECKPHISH_API_KEY = Get-Content .\init.conf | findstr CHECKPHISH_API_KEY |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

if ( $ENABLEESASPAMBL -eq "true" -or $ENABLESELFRELEASE -eq "true" ){

    $ESAUSERNAME = Read-Host "Please input the ESA/SMA Username"

    $ESAPASSWORD = Read-Host -assecurestring "Please input the Password"

    $ESACREDENTIAL = [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes($ESAUSERNAME+":"+$([System.Runtime.InteropServices.Marshal]::PtrToStringAuto([System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($ESAPASSWORD)))))

}

function Submit-CHECKPHISH {

    Write-OutPut "CheckPhish Scan Report: " >> $LOGFILE

    $HEADERS = @{ "Content-Type" = "application/json" }

    $SCANBODY = @{ "urlInfo" = @{ "url" = "$URL"} ; "apiKey" = "$CHECKPHISH_API_KEY" }

    $SCAN = Invoke-RestMethod -Method 'POST' -Uri 'https://developers.checkphish.ai/api/neo/scan' -Headers $HEADERS -Body $(convertto-json($SCANBODY))

    if ( [string]::IsNullOrEmpty($SCAN.errorMessage) ) {

        Start-Sleep -s 60

        $RESULTBODY = @{ "apiKey" = "$CHECKPHISH_API_KEY" ; "jobID" = "$($SCAN.jobID)" ; "insights" = $true }

        $RESULTS = Invoke-RestMethod -Method 'POST' -Uri 'https://developers.checkphish.ai/api/neo/scan/status' -Headers $HEADERS -Body $(convertto-json($RESULTBODY))

        Write-OutPut "ScanResultsDisposition:    ",$($RESULTS.disposition) >> $LOGFILE

        Write-OutPut "ScanReportURL:             ",$($RESULTS.insights) >> $LOGFILE

        Write-OutPut "ScreenShotURL:             ",$($RESULTS.screenshot_path) >> $LOGFILE

        Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE

    }else {

        Write-OutPut $SCAN.errorMessage >> $LOGFILE

        Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE

    }

}

function Google-Safe-Browsing {

    Write-OutPut "Google Safe Browsing Scan Report: " >> $LOGFILE

    $BODY = @()

    $BODY +=[pscustomobject]@{"client" = @{"clientId" = "company"; "clientVersion" = "1.0"}; "threatInfo" = @{"threatTypes" = "MALWARE","SOCIAL_ENGINEERING"; "platformTypes" = "WINDOWS"; "threatEntryTypes" = "URL"; "threatEntries" = @{"url" = "$URL"}}}

    $HEADERS = @{ 'Content-Type' = "application/json" }

    $JSONBODY = $BODY | ConvertTo-Json

    $Uri = 'https://safebrowsing.googleapis.com/v4/threatMatches:find?key='+ $GOOGLE_API_KEY

    $Results = Invoke-RestMethod -Method 'POST' -Uri $Uri -Body $JSONBODY -Headers $HEADERS

    if ( ([string]::IsNullOrEmpty($Results)) ) {

        Write-OutPut "Can not find the result in Google Safe Browsing Scan."  >> $LOGFILE

        Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE

     }else{

        $ThreatType = $Results | select -expand matches | select threatType

        Write-OutPut "Google Safe Browsing Scan Results:    ",$($ThreatType) >> $LOGFILE

        Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE

    }

}

function Submit-URLSCAN {

    Write-OutPut "URLscan Scan Report: " >> $LOGFILE

    $BODY = @{ 'url' = "$URL"; 'public' = 'on' }

    $HEADERS = @{ 'API-Key' = "$URLSCAN_API_KEY" }

    Try { $SCANRESPONSE = Invoke-RestMethod -Method 'POST' -Uri 'https://urlscan.io/api/v1/scan/' -Headers $HEADERS -Body $BODY } Catch { $reader = New-Object System.IO.StreamReader($_.Exception.Response.GetResponseStream()) }

    if ( [string]::IsNullOrEmpty($SCANRESPONSE) ) {

        $reader.BaseStream.Position = 0

        $reader.DiscardBufferedData()

        $Exception = $reader.ReadToEnd() | ConvertFrom-Json

    }

    if ( -not ([string]::IsNullOrEmpty($Exception)) ) {

        Write-Output "Exception Error:" $Exception.description >> $LOGFILE

        Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE

    }else{     

        $RESPONSEAPI = $SCANRESPONSE.api

        Do {

            Start-Sleep -s 30

            $RESPONSE = try { $SCANRESULT = Invoke-RestMethod -Method 'GET' -Uri $RESPONSEAPI } catch { $_.Exception.Response.StatusCode.Value__}

        }Until($RESPONSE -ne 404)

        $ReportURL = $SCANRESULT.task.reportURL

        $ScreenShot = $SCANRESULT.task.screenshotURL

        Write-OutPut "ScanReportURL:     ",$($ReportURL) >> $LOGFILE

        Write-OutPut "ScreenShotURL:     ",$($ScreenShot) >> $LOGFILE

        Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE

        Start-Sleep -s 3

    }

}

function Submit-URL-Virustotal {

    $BODY = @{ "url" = "$URL" }

    $HEADERS = @{ "x-apikey" = "$VIRUSTOTAL_API_KEY" }

    $SCAN = Invoke-RestMethod -Method 'POST' -Uri "https://www.virustotal.com/api/v3/urls" -Headers $HEADERS -Body $BODY

    $RESULTID = $SCAN.data.id |  %{ $_.Split('-')[1]; } | foreach{ $_.ToString().Trim() }

    $PERMALINK = "https://virustotal.com/gui/url/"+$RESULTID+"/detection"

    Start-Sleep -s 30

    $SCANRESULTS = Invoke-RestMethod -Method 'GET' -Uri "https://www.virustotal.com/api/v3/urls/$RESULTID" -Headers $HEADERS

    Write-OutPut "VirusTotal URL Scan Report: " >> $LOGFILE

    Write-OutPut $PERMALINK >> $LOGFILE

    Write-OutPut "VirusTotal URL Scan Stats: " >> $LOGFILE

    Write-OutPut $SCANRESULTS.data.attributes.last_analysis_stats >> $LOGFILE

    Write-OutPut "VirusTotal URL COMMUNITY VOTES : " >> $LOGFILE

    Write-OutPut $SCANRESULTS.data.attributes.total_votes >> $LOGFILE

    Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE

}

function Submit-FILE-Virustotal {

    $BODY = @{ "apikey" = "$VIRUSTOTAL_API_KEY"; "file" = "$FILEPATH" }

    $SCAN = Invoke-RestMethod -Method 'POST' -Uri 'https://www.virustotal.com/vtapi/v2/file/scan' -Body $BODY

    $HASH = $SCAN.sha256

    Start-Sleep -s 60

    $HEADERS = @{ "x-apikey" = "$VIRUSTOTAL_API_KEY" }

    $SCAN = Invoke-RestMethod -Method 'GET' -Uri "https://www.virustotal.com/api/v3/files/$HASH" -Headers $HEADERS

    $PERMALINK = "https://virustotal.com/gui/file/"+$SCAN.data.id+"/detection"

    Write-OutPut "VirusTotal File Scan Report: " >> $LOGFILE

    Write-OutPut $PERMALINK >> $LOGFILE

    Write-OutPut "VirusTotal File Scan Stats: " >> $LOGFILE

    Write-OutPut $SCAN.data.attributes.last_analysis_stats >> $LOGFILE

    Write-OutPut "VirusTotal File COMMUNITY VOTES : " >> $LOGFILE

    Write-OutPut $SCAN.data.attributes.total_votes >> $LOGFILE

    Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE

}

function Submit-FILE-OPSWAT {

    $URI = 'https://api.metadefender.com/v4/hash/'+$HASH

    $HEADERS = @{}

    $HEADERS.Add('apikey', $OPSWAT_API_KEY)

    $RESPONSE = try { $SCANRESULT = Invoke-RestMethod -Method 'GET' -Uri $URI  -Headers $HEADERS } catch { $_.Exception.Response.StatusCode.Value__ }

    if ( $RESPONSE -eq 404){

        $FILENAME = Split-Path $FILEPATH -leaf

        $URI = 'https://api.metadefender.com/v4/file'

        $HEADERS = @{}

        $HEADERS.Add('apikey', $OPSWAT_API_KEY)

        $HEADERS.Add('filename', $FILENAME)

        $SCANRESULT = Invoke-RestMethod -Method 'Post' -Uri $URI  -Headers $HEADERS -Body $FILEPATH -ContentType 'application/octet-stream'

        $HASH = $SCANRESULT.sha256

        $DATA_ID = $SCANRESULT.data_id

        $URI = 'https://api.metadefender.com/v4/file/'+$DATA_ID

        $HEADERS = @{}

        $HEADERS.Add('apikey', $OPSWAT_API_KEY)

        Do {

            Start-Sleep -s 5

            $RESPONSE = try { $SCANRESULT = Invoke-RestMethod -Method 'GET' -Uri $URI -Headers $HEADERS } catch { $_.Exception.Response.StatusCode.Value__}

        } Until ($RESPONSE -ne 404) 

        Write-OutPut "OPSWAT MetaDefender Cloud File Scan Report: " >> $LOGFILE

        $RESULTLINK = 'https://metadefender.opswat.com/results#!/file/'+$HASH+'/hash/overview'

        Write-OutPut $RESULTLINK >> $LOGFILE

        Write-OutPut "POSITIVES |   TOTAL" >> $LOGFILE

        Write-OutPut $($SCANRESULT.scan_results.total_detected_avs) "        |  " $($SCANRESULT.scan_results.total_avs) >> $LOGFILE

        Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE

    }else {

        Write-OutPut "OPSWAT MetaDefender Cloud File Scan Report: " >> $LOGFILE

        $RESULTLINK = 'https://metadefender.opswat.com/results#!/file/'+$HASH+'/hash/overview'

        Write-OutPut $RESULTLINK >> $LOGFILE

        Write-OutPut "POSITIVES |   TOTAL" >> $LOGFILE

        Write-OutPut $($SCANRESULT.scan_results.total_detected_avs) "        |  " $($SCANRESULT.scan_results.total_avs) >> $LOGFILE

        Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE

    }

}

function FromEmailAttachment {

    $EMLData = Get-Content $Args[0]

    $AdoDbStream = New-Object -ComObject ADODB.Stream

    $AdoDbStream.Open()

    $AdoDbStream.LoadFromFile($Args[0])

    $CdoMessage = New-Object -ComObject CDO.Message

    $CdoMessage.DataSource.OpenObject($AdoDbStream,"_Stream")

    Write-OutPut "===From:    ",$($CdoMessage.From) >> $LOGFILE

    Write-OutPut "===To:    ",$($CdoMessage.To) >> $LOGFILE

    Write-OutPut "===Subject:    ",$($CdoMessage.Subject) >> $LOGFILE

    Write-OutPut "===DateTimeReceived:    ",$($CdoMessage.SentOn) >> $LOGFILE

    Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE

    if ( $ENABLEESASPAMBL -eq "true"){

        if ( ($EMAIL.ToRecipients.Address -eq "blockforme@esa.company.com") -or ($EMAIL.ToRecipients.Address -eq "blockforall@esa.company.com")  ){

            ESASpamQuarantine

        }

    }

    if ( $ENABLESELFRELEASE -eq "true"){

        if ( ($EMAIL.ToRecipients.Address -eq "release@esa.company.com") ){

            BlockedMailSelfRelease

        }

    }

    if ( ($EMAIL.ToRecipients.Address -eq "investigation@esa.company.com") ){

        $INVESTIGATION = $true

    }else{

        $INVESTIGATION = $false

    }

    $TextBody = $CdoMessage.Fields.Item("urn:schemas:httpmail:textdescription").Value

    $HTMLBody = $CdoMessage.Fields.Item("urn:schemas:httpmail:htmldescription").Value

    $EmailBODY = $TextBody + $HTMLBody + $EMLData

    $URLLIST = $EmailBODY | select-string -pattern $URLRegEx -AllMatches  | %{ $_.Matches } | %{ $_.Value } | Sort-Object | ? {$EXEMPTURL -notcontains $_} | Get-Unique

    $EXPLIST = $EXEMPTURL | foreach-object { $URLLIST -match $_ }

    $URLARRAY = @()

    foreach ($URL in $URLLIST){ if ( $URL -notin $EXPLIST ){$URLARRAY = $URLARRAY += $URL }}

    if ( -not ([string]::IsNullOrEmpty($URLARRAY)) ){

        foreach($URL in $URLARRAY){

            Write-OutPut "URL:     ",$URL >> $LOGFILE

            Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE

            CheckRedirectedURL

        }

    }

    $BOUNDARY = $CdoMessage.Fields.Item("urn:schemas:mailheader:content-type").Value | %{ $_.Split(';')[1]; } | %{ $_.Split('"')[1]; }

    for ($i=1;$i -le $CdoMessage.Attachments.count;$i++){

        $ContentMediaType = $CdoMessage.Attachments.Item($i).ContentMediaType

        $FILENAME = $CdoMessage.Attachments.Item($i).FileName

        $AttachmentPATTERN = """$FILENAME""(.*?)  --$BOUNDARY"

        $ATTACHDATA = [regex]::match($EMLData, $AttachmentPATTERN).Groups[1].Value

        if ( ($($ContentMediaType|%{$_.Split('/')[0];}) -eq "application") -and (-not [string]::IsNullOrEmpty($FILENAME))){

            $TRIMNUM = $ATTACHDATA.LastIndexOf("  ")+2

            $ATTACHMENTDATA = $ATTACHDATA.Remove(0,$TRIMNUM)

            $ATTFILENAME = ($DOWNLOADDIRECTORY + $FILENAME)

            $bytes = [Convert]::FromBase64String($ATTACHMENTDATA)

            [IO.File]::WriteAllBytes($ATTFILENAME, $bytes)

            Write-OutPut "Downloaded Attachment : "  ($ATTFILENAME) >> $LOGFILE

            Try { $ALGORITHM = (Get-FileHash ($ATTFILENAME)).Algorithm }

            Catch [System.SystemException] { $ExceptionError = $_.Exception.Message }

            if ( [string]::IsNullOrEmpty($ExceptionError) ) {

                $HASH = (Get-FileHash ($ATTFILENAME)).Hash.ToLower()

                $FILEPATH = (Get-FileHash ($ATTFILENAME)).Path

                Write-OutPut "Attachment $ALGORITHM Hash : "  $HASH >> $LOGFILE

                $EXTENSION = [System.IO.Path]::GetExtension($ATTFILENAME)

                if ( $EXTENSION -eq ".pdf" ){

                    Write-OutPut "=====================Extract URLs from the PDF file=====================" >> $LOGFILE

                    ExtractURLFromPDFHTML

                }else{

                    if ( -not ([string]::IsNullOrEmpty($FILEPATH)) ){

                        Submit-FILE-Virustotal

                        Submit-FILE-OPSWAT

                    }

                    }

            } else {

                Write-OutPut "********************************************************************" > $LOGFILE

                Write-Output "Exception Error:" $ExceptionError >> $LOGFILE   

                Write-OutPut "********************************************************************" > $LOGFILE

                }

        }

    }

}

function ESASpamQuarantine {

    $regex = [regex]"\<(.*)\>"

    $Blocklist_Sender = $($regex.match($($CdoMessage.From)).Groups[1].value).ToLower()

    if ( ($EMAIL.ToRecipients.Address -eq "blockforall@esa.company.com") ){

        $Blocklist_recipient = $('.*@'+$regex.match($($CdoMessage.To)).Groups[1].value.split("@")[1]).ToLower()

        $Blocklist_recipient_domain = $('.*@'+$regex.match($($CdoMessage.To)).Groups[1].value.split("@")[1]).ToLower()

    }else{

        if ( ($EMAIL.ToRecipients.Address -eq "blockforme@esa.company.com") ){

            $Blocklist_recipient = $($regex.match($($CdoMessage.To)).Groups[1].value).ToLower()

            $Blocklist_recipient_domain = $('.*@'+$regex.match($($CdoMessage.To)).Groups[1].value.split("@")[1]).ToLower()

        }

    }

    $HEADERS = New-Object "System.Collections.Generic.Dictionary[[String],[String]]"

    $HEADERS.Add("Authorization", "Basic $ESACREDENTIAL")

    $HEADERS.Add("Content-Type", "text/plain")

    $SenderList = $(Invoke-RestMethod -Method 'GET' -Uri "$ESAURL1/esa/api/v2.0/quarantine/blocklist?action=view&quarantineType=spam&viewBy=recipient&search=$Blocklist_recipient" -Headers $HEADERS).data.senderList

    $SenderList_domain = $(Invoke-RestMethod -Method 'GET' -Uri "$ESAURL1/esa/api/v2.0/quarantine/blocklist?action=view&quarantineType=spam&viewBy=recipient&search=$Blocklist_recipient_domain" -Headers $HEADERS).data.senderList

    if ( ([string]::IsNullOrEmpty($SenderList)) -and ([string]::IsNullOrEmpty($SenderList_domain)) ){

        $BODY = "{ `n`"action`": `"add`", `n`"quarantineType`": `"spam`", `n`"viewBy`": `"recipient`", `n`"senderList`":  [`"$Blocklist_Sender`"], `n`"recipientAddresses`": [`"$Blocklist_recipient`"] `n}"

        $Response_1 = Invoke-RestMethod -Method 'POST' -Uri "$ESAURL1/esa/api/v2.0/quarantine/blocklist" -Headers $HEADERS -Body $BODY

        ssh -i ~\.ssh\$PRIVATEKEY $ESAUSERNAME@$HOST1 "slblconfig EXPORT"

        $Response_2 = Invoke-RestMethod -Method 'POST' -Uri "$ESAURL2/esa/api/v2.0/quarantine/blocklist" -Headers $HEADERS -Body $BODY

        ssh -i ~\.ssh\$PRIVATEKEY $ESAUSERNAME@$HOST2 "slblconfig EXPORT"

        Write-OutPut "********************************************************************" >> $LOGFILE

        Write-Output $Response_1 | ConvertTo-Json >> $LOGFILE

        Write-Output $Response_2 | ConvertTo-Json >> $LOGFILE

        Write-OutPut "********************************************************************" >> $LOGFILE

    }else{

        if ( ($Blocklist_Sender -in $SenderList) -or ($Blocklist_Sender -in $SenderList_domain) ){

            Write-OutPut "********************************************************************" >> $LOGFILE

            Write-OutPut "$Blocklist_Sender was already blocked in $Blocklist_recipient Blocklist." >> $LOGFILE

            Write-OutPut "********************************************************************" >> $LOGFILE

        }else{

            $BODY = "{ `n`"action`": `"append`", `n`"quarantineType`": `"spam`", `n`"viewBy`": `"sender`", `n`"senderAddresses`":  [`"$Blocklist_Sender`"], `n`"recipientList`": [`"$Blocklist_recipient`"] }"

            $Response_1 = Invoke-RestMethod -Method 'POST' -Uri "$ESAURL1/esa/api/v2.0/quarantine/blocklist" -Headers $HEADERS -Body $BODY

            $Response_2 = Invoke-RestMethod -Method 'POST' -Uri "$ESAURL2/esa/api/v2.0/quarantine/blocklist" -Headers $HEADERS -Body $BODY

            Write-OutPut "********************************************************************" >> $LOGFILE

            Write-OutPut "*************************Block the Sender***************************" >> $LOGFILE

            Write-OutPut "********************************************************************" >> $LOGFILE

            Write-Output $Response_1 | ConvertTo-Json >> $LOGFILE

            Write-Output $Response_2 | ConvertTo-Json >> $LOGFILE   

            Write-OutPut "********************************************************************" >> $LOGFILE

        }

    }

}

function BlockedMailSelfRelease {

    $regex = [regex]"Message ID\:.*"

    $Message_ID_ESA = $($regex.match($($CdoMessage.TextBody)).value) | %{ $_.Split(':')[1]; } | foreach{ $_.ToString().Trim() }

    $SMA_MAIL_LOGS = ssh -i ~\.ssh\$PRIVATEKEY $ESAUSERNAME@$SMA "grep $Message_ID_ESA mail_logs" | findstr "MID"

    $regex_MID = [regex]"MID .* \("

    $Message_ID = $regex_MID.match($SMA_MAIL_LOGS).Value.split(" ")[1]

    $HEADERS = New-Object "System.Collections.Generic.Dictionary[[String],[String]]"

    $HEADERS.Add("Authorization", "Basic $ESACREDENTIAL")

    $HEADERS.Add("Content-Type", "text/plain")

    $BODY = "{ `n`"action`": `"release`", `n`"mids`": [$Message_ID], `n`"quarantineName`": `"$QUARANTINENAME`", `n`"quarantineType`": `"pvo`" `n}"

    $Response = Invoke-RestMethod -Method 'POST' -Uri "$SMAURL/sma/api/v2.0/quarantine/messages" -Headers $HEADERS -Body $BODY

    $SMTPSERVER = Get-Content .\init.conf | findstr SMTPSERVER |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

    $REPLYTO = $($EMAIL.From.Address.ToString())

    $EMAIBODY = 'Message Information:' + "`r`n" + 'Email From: ' + $($CdoMessage.From) + "`r`n" + 'Subject: ' + $($CdoMessage.Subject) + "`r`n" + 'Date: ' + $($CdoMessage.SentOn) + "`r`n" + 'Message ID: ' + $Message_ID_ESA

    if ( $Response.data.totalCount -eq 0 ){

        $REPLYSUBJECT = "AUTO-REPLY/Blocked Email not found OR released already--- "+$Message_ID_ESA

    }

    if ( $Response.data.totalCount -eq 1 ){

        $REPLYSUBJECT = "AUTO-REPLY/Blocked Email released successfully--- "+$Message_ID_ESA

    }

    Send-MailMessage -SmtpServer $SMTPSERVER -To $REPLYTO -From $EMAILADDRESS -Subject $REPLYSUBJECT -Body $EMAIBODY

    Write-OutPut "********************************************************************" >> $LOGFILE

    Write-OutPut "*****************Release Email From Quarantine**********************" >> $LOGFILE

    Write-OutPut "********************************************************************" >> $LOGFILE

    Write-Output $Response | ConvertTo-Json >> $LOGFILE

    Write-OutPut "********************************************************************" >> $LOGFILE

}

function ConvertLogToHTML {

    $File = Get-Content $LOGFILE

    $FileLine = @()

    Foreach ($Line in $File) {

        $MyObject = New-Object -TypeName PSObject

        if ( ($Line -match "virustotal.com") -or ($Line -match "urlscan.io") -or ($Line -match "opswat.com") -or ($Line -match "checkphish.ai") -or ($Line -match "googleapis.com") ){

            if ($Line -match ".png"){

                Add-Member -InputObject $MyObject -Type NoteProperty -Name "Security Scan Report" -Value "<a href='$Line'>$Line</a><img src='$Line' height='640' width='800'>"

            }else{ Add-Member -InputObject $MyObject -Type NoteProperty -Name "Security Scan Report" -Value "<a href='$Line'>$Line</a>" }

        }else{ Add-Member -InputObject $MyObject -Type NoteProperty -Name "Security Scan Report" -Value $Line }

        $FileLine += $MyObject

    }

    $($FileLine | ConvertTo-Html -Title "Security Scan Report" -Property "Security Scan Report" ) -replace '&gt;','>' -replace '&lt;','<' -replace '&#39;',"'" | Out-File $HTMLREPFILE

}

function ExtractURLFromPDFHTML {

    if ( $EXTENSION -eq ".pdf" ){

        Add-Type -Path $PDF2HTMLDLLPATH

        $extractor = new-object Bytescout.PDF2HTML.HTMLExtractor

        $extractor.CheckPermissions = $False

        $extractor.LoadDocumentFromFile($ATTFILENAME)

        $BaseName = gci $ATTFILENAME | %{$_.BaseName}

        $FilePath = Split-Path -path $ATTFILENAME

        $HTMLFILE = $FilePath+"\"+$BaseName+".html"

        $extractor.SaveHtmlToFile($HTMLFILE)

        $extractor.Reset()

    }else{

        $HTMLFILE = $ATTFILENAME

    }

        $URLArrayFromHTML = Get-Content $HTMLFILE | select-string -pattern $URLRegEx -AllMatches | %{ $_.Matches } | %{ $_.Value } | Sort-Object | Get-Unique

        $URLArrayFromPDF = Get-Content $ATTFILENAME | select-string -pattern $URLRegEx -AllMatches | %{ $_.Matches } | %{ $_.Value } | Sort-Object | Get-Unique

        $URLLIST = $URLArrayFromHTML + $URLArrayFromPDF | Sort-Object | Get-Unique

        $EXPLIST = $EXEMPTURL | foreach-object { $URLLIST -match $_ }

        $URLARRAY = @()

    foreach ($URL in $URLLIST){ if ( $URL -notin $EXPLIST ){$URLARRAY = $URLARRAY += $URL }}

    # URL is not null or empty do check the URL

    if ( -not ([string]::IsNullOrEmpty($URLARRAY)) ){

        foreach($URL in $URLARRAY){

            Write-OutPut "URL:     ",$URL >> $LOGFILE

            Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE

            CheckRedirectedURL

            }

    }else{ Write-OutPut "=====================No URL in the PDF/HTML file needs to scan=====================" >> $LOGFILE }

}

function CheckRedirectedURL {

    Try { $webRequest = [System.Net.WebRequest]::Create($URL) } Catch { $ExceptionError = $_.Exception.Message }

    if ( [string]::IsNullOrEmpty($ExceptionError) ) {

        if ( [string]::IsNullOrEmpty($([URI]$URL).Scheme) ) { $URL = "http://"+$URL }

        $webRequest.AllowAutoRedirect=$false

        Try { $webResponse = $webRequest.GetResponse() } Catch { $ExceptionError = $_.Exception.Message }    

        if ( [string]::IsNullOrEmpty($ExceptionError) ) {

            if ( ($webResponse.StatusCode -eq "Found") -or ($webResponse.StatusCode -eq "Redirect") ) {

                Write-Output "The Original URL is:" $URL >> $LOGFILE

                $URL = $webResponse.GetResponseHeader("Location")    

                Write-OutPut "    |" >> $LOGFILE

                Write-Output "    |--> The Redirected URL is:" $URL >> $LOGFILE

                Submit-URL-Virustotal

                Submit-URLSCAN

                Submit-CHECKPHISH

                Google-Safe-Browsing

            }else{

                if ( $webResponse.ResponseUri.OriginalString -eq $webResponse.ResponseUri.AbsoluteUri )  {

                    Write-Output "No Redirection, Will scan the Original URL" >> $LOGFILE

                    Submit-URL-Virustotal

                    Submit-URLSCAN

                    Submit-CHECKPHISH

                    Google-Safe-Browsing

                }

            }

        }else{

            Write-Output "Exception Error:" $ExceptionError >> $LOGFILE

            Write-Output "Will scan the Original URL" >> $LOGFILE

            Submit-URL-Virustotal

            Submit-URLSCAN

            Submit-CHECKPHISH

            Google-Safe-Browsing    

        }

        Get-Job | Wait-Job

        $webResponse.Close()

    }else { 

        Write-Output "Exception Error:" $ExceptionError >> $LOGFILE

        Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE

        }

}

function MAIN {

    date

    If(!(test-path $DOWNLOADDIRECTORY)){ New-Item -ItemType directory -Path $DOWNLOADDIRECTORY }

    If(!(test-path $REPORTSDIRECTORY)){ New-Item -ItemType directory -Path $REPORTSDIRECTORY }

    Import-Module $EWSDLLPATH

    $SERVICE = New-Object Microsoft.Exchange.WebServices.Data.ExchangeService([Microsoft.Exchange.WebServices.Data.ExchangeVersion]::Exchange2010_SP2)

    $SERVICE.Credentials = New-Object Net.NetworkCredential($USERNAME, $PASSWORD, $DOMAIN)

    $SERVICE.AutodiscoverUrl($EMAILADDRESS)

    $INBOX = [Microsoft.Exchange.WebServices.Data.Folder]::Bind($SERVICE,[Microsoft.Exchange.WebServices.Data.WellKnownFolderName]::Inbox)

    $FOLDERROOT = [Microsoft.Exchange.WebServices.Data.Folder]::Bind($SERVICE,[Microsoft.Exchange.WebServices.Data.WellKnownFolderName]::msgFolderRoot)

    $SUBFOLDERID = ($FOLDERROOT.FindFolders([Microsoft.Exchange.WebServices.Data.FolderView]100) | where { $_.DisplayName -eq $SUBFOLDER }).Id

    $PROPERTYSET = new-object Microsoft.Exchange.WebServices.Data.PropertySet([Microsoft.Exchange.WebServices.Data.BasePropertySet]::FirstClassProperties)

    $PROPERTYSET.RequestedBodyType = [Microsoft.Exchange.WebServices.Data.BodyType]::Text

    [System.Net.ServicePointManager]::SecurityProtocol = @("Tls12","Tls11","Tls","Ssl3")

#    Use .Net Object to ignore self-signed certificate

    if ("TrustAllCertsPolicy" -as [type]) {}

    else {

    Add-Type @"

    using System.Net;

    using System.Security.Cryptography.X509Certificates;

    public class TrustAllCertsPolicy : ICertificatePolicy {

        public bool CheckValidationResult(

            ServicePoint srvPoint, X509Certificate certificate,

            WebRequest request, int certificateProblem) {

            return true;

        }

    }

"@

    [System.Net.ServicePointManager]::CertificatePolicy = New-Object TrustAllCertsPolicy

    }

    if ( $INBOX.TotalCount -ne 0 ){

        $ITEMS = $INBOX.FindItems($INBOX.TotalCount)

        foreach ( $EMAIL in $ITEMS.Items ){

            # only get unread emails

            if( $EMAIL.isread -eq $false ){

                    # load the property set to get to the body

                    $EMAIL.load($PROPERTYSET)

                    $RANDOMID = -join ((48..57) + (97..122) | Get-Random -Count 20 | % {[char]$_})

                    $LOGFILE = $REPORTSDIRECTORY+"security-scan-report_"+$RANDOMID+".log"

                    $HTMLREPFILE = $REPORTSDIRECTORY+"security-scan-report_"+$RANDOMID+".html"

                    # output the results - first of all the From, Subject and Date Time Received

                    Write-OutPut "====================================================================" > $LOGFILE

                    Write-OutPut "From:    ",$($EMAIL.From) >> $LOGFILE

                    Write-OutPut "To:    ",$($EMAIL.ToRecipients) >> $LOGFILE

                    Write-OutPut "Subject: ",$($EMAIL.Subject) >> $LOGFILE

                    Write-OutPut "DateTimeReceived:    ",$($EMAIL.DateTimeReceived) >> $LOGFILE

                    Write-OutPut "===================================================================="  >> $LOGFILE

                    $URLRegEx = '\b(?:(?:https?|ftp|file)://|www\.|ftp\.)(?:\([-A-Z0-9+&@#/%=~_|$?!:,.]*\)|[-A-Z0-9+&@#/%=~_|$?!:,.])*(?:\([-A-Z0-9+&@#/%=~_|$?!:,.]*\)|[A-Z0-9+&@#/%=~_|$])'

                    $URLLIST = $($EMAIL.Body.Text) | select-string -pattern $URLRegEx -AllMatches | %{ $_.Matches } | %{ $_.Value } | Sort-Object | Get-Unique

                    $EXPLIST = $EXEMPTURL | foreach-object { $URLLIST -match $_ }

                    $URLARRAY = @()

                    foreach ($URL in $URLLIST){ if ( $URL -notin $EXPLIST ){$URLARRAY = $URLARRAY += $URL }}

                    # URL is not null or empty do check the URL

                    if ( -not ([string]::IsNullOrEmpty($URLARRAY)) ){

                        foreach($URL in $URLARRAY){

                            Write-OutPut "URL:     ",$URL >> $LOGFILE

                            Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE

                            CheckRedirectedURL

                        }

                    }

                    foreach($ATTACH in $EMAIL.Attachments){

                        if ( ![string]::IsNullOrEmpty($ATTACH.Name)){

                            $EXTENSION = [System.IO.Path]::GetExtension($ATTACH.Name.ToString().ToLower())

                            }else{ $EXTENSION ="" }

                        # only save the file that extension is not in the extension list

                        if ( !$EXTENSIONARRAY.contains($EXTENSION) -or [string]::IsNullOrEmpty($EXTENSION) ){

                            if ( ($ATTACH.ContentType -eq "message/rfc822") -or ([string]::IsNullOrEmpty($ATTACH.ContentType)) -and ($ATTACH.PSobject.Properties.name -match "Item") ){

                                Write-OutPut "=====================The attachment is an email=====================" >> $LOGFILE

                                $MIMEPROPERTYSET = new-object Microsoft.Exchange.WebServices.Data.PropertySet([Microsoft.Exchange.WebServices.Data.ItemSchema]::MimeContent)

                                $ATTACH.Load($MIMEPROPERTYSET)

                                $AttachmentData = $ATTACH.Item.MimeContent.Content

                                $ATTFILENAME = ($DOWNLOADDIRECTORY + [GUID]::NewGuid().ToString() + "_MSG.eml")

                                $EXTENSION = ".eml"

                            }else{

                                $ATTACH.Load()

                                $AttachmentData = $ATTACH.Content

                                $ATTFILENAME = ($DOWNLOADDIRECTORY + $ATTACH.Name.ToString().Trim(""))

                            }

                            Try { $ATTFILE = new-object System.IO.FileStream(($ATTFILENAME), [System.IO.FileMode]::Create) }

                            Catch [System.SystemException] { $ExceptionError = $_.Exception.Message }

                            if ( [string]::IsNullOrEmpty($ExceptionError) ) {

                                $ATTFILE.Write($AttachmentData, 0, $AttachmentData.Length)

                                $ATTFILE.Close()

                                Write-OutPut "Downloaded Attachment : "  ($ATTFILENAME) >> $LOGFILE

                                Try { $ALGORITHM = (Get-FileHash ($ATTFILENAME)).Algorithm }

                                Catch [System.SystemException] { $ExceptionError = $_.Exception.Message }

                                if ( [string]::IsNullOrEmpty($ExceptionError) ) {

                                    $HASH = (Get-FileHash ($ATTFILENAME)).Hash.ToLower()

                                    $FILEPATH = (Get-FileHash ($ATTFILENAME)).Path

                                    Write-OutPut "Attachment $ALGORITHM Hash : "  $HASH >> $LOGFILE

                                    if ( ($EXTENSION -eq ".eml") -or ($EXTENSION -eq ".raw") ){

                                        FromEmailAttachment $ATTFILENAME

                                    } else{

                                            if ( ($EXTENSION -eq ".pdf") -or ($EXTENSION -eq ".htm") -or ($EXTENSION -eq ".html") ){

                                                Write-OutPut "=====================Extract URLs from the PDF/HTML file=====================" >> $LOGFILE

                                                ExtractURLFromPDFHTML

                                                Submit-FILE-Virustotal

                                                Submit-FILE-OPSWAT

                                            }else {

                                                if ( -not ([string]::IsNullOrEmpty($FILEPATH)) ){

                                                    Submit-FILE-Virustotal

                                                    Submit-FILE-OPSWAT

                                                }

                                                }

                                        }

                                } else {

                                    Write-OutPut "********************************************************************" > $LOGFILE

                                    Write-Output "Exception Error:" $ExceptionError >> $LOGFILE   

                                    Write-OutPut "********************************************************************" > $LOGFILE

                                    }

                            } else {

                                    Write-OutPut "********************************************************************" > $LOGFILE

                                    Write-Output "Exception Error:" $ExceptionError >> $LOGFILE   

                                    Write-OutPut "********************************************************************" > $LOGFILE

                                }        

                        }

                    }

                    Write-OutPut "================================END=================================" >> $LOGFILE

                    ConvertLogToHTML

                    $REPLYSUBJECT = "AUTO-REPLY/Security Scan Report-- "+$($EMAIL.Subject)

                    $SMTPSERVER = Get-Content .\init.conf | findstr SMTPSERVER |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

                    if ($INVESTIGATION) {

                        $REPLYTO = $EMAIL.From.Address.ToString()

                    }else{

                        $REPLYTO = Get-Content .\init.conf | findstr REPLYTO |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

                    }

                    $REPLYCC = Get-Content .\init.conf | findstr REPLYCC |  %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() }

                    $EMAIBODY = '%CUSTOMER_EMAIL=' + $($EMAIL.From.Address) + "`r`n" + '%CUSTOMER=' + $($EMAIL.From.Name) + "`r`n" + '%SUMMARY=Security Scan Report--' + $($EMAIL.Subject)

                    Send-MailMessage -SmtpServer $SMTPSERVER -To $REPLYTO -From $EMAILADDRESS -Cc $REPLYCC -Subject $REPLYSUBJECT -Body $EMAIBODY -Attachments $HTMLREPFILE

            }

            $EMAIL.isRead = $true

            $EMAIL.Update([Microsoft.Exchange.WebServices.Data.ConflictResolutionMode]::AutoResolve)

            $EMAIL.Move($SUBFOLDERID)

        }

    }else{ Write-OutPut "==============There is no email in the inbox==================" }

}

# Main Procedure

if ( $INTERVAL -eq 0 ){

    MAIN

}else{

    while($true){

        MAIN

        Write-Host -NoNewline "==============After"$INTERVAL" seconds will check again=============="

        ""

        Start-Sleep -s $INTERVAL

    }

}