AutoSpamEmailScan.ps1
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<#PSScriptInfo .VERSION 3.3 .GUID 134de175-8fd8-4938-9812-053ba39eed83 .AUTHOR banhao@gmail.com .COMPANYNAME .COPYRIGHT .TAGS .LICENSEURI .PROJECTURI .ICONURI .EXTERNALMODULEDEPENDENCIES .REQUIREDSCRIPTS .EXTERNALSCRIPTDEPENDENCIES .RELEASENOTES #> <# .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. 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 #> Param() <# .SYNOPSIS <> .DESCRIPTION <> .PARAMETER <Parameter_Name> <> .INPUTS <> .OUTPUTS <> .NOTES Before start running the script, download the Exchange Web Services Managed API 2.2 and install it. https://www.microsoft.com/en-us/download/details.aspx?id=42951 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 ...... The trick is 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. Version: 3.3 Author: <HAO BAN/banhao@gmail.com> Creation Date: <07/11/2019> Purpose/Change: Fix the issue that cannot convert the PFD file with the CheckPermissions is True. .EXAMPLE This PowerShell passed the test in PowerShell version 5.1.16299.1146 PS H:\>host Check the PowerShell version. #> #------------------------------------------------------------------------------------------------------------------------------------------------------- #variables cls $SALT = $Args[0] $ENCODEDPASSWORD = Get-Content .\init.conf | findstr PASSWORD | %{ $_.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,"") } $USERNAME = Get-Content .\init.conf | findstr USERNAME | %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() } $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() } $DLLPATH = Get-Content .\init.conf | findstr DLLPATH | %{ $_.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() }) $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() } function Google-Safe-Browsing { $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 }else{ $ThreatType = $Results | select -expand matches | select threatType Write-OutPut "Google Safe Browsing Report: " >> $LOGFILE Write-OutPut "Google Safe Browsing Scan Results: ",$($ThreatType) >> $LOGFILE Write-OutPut "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" >> $LOGFILE } } function Submit-URLSCAN { $BODY = @{ 'url' = "$URL"; 'public' = 'on' } $HEADERS = @{ 'API-Key' = "$URLSCAN_API_KEY" } $SCANRESPONSE = Invoke-RestMethod -Method 'POST' -Uri 'https://urlscan.io/api/v1/scan/' -Headers $HEADERS -Body $BODY $RESPONSEAPI = $SCANRESPONSE.api Do { Start-Sleep -s 15 $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 "urlscan.io Report: " >> $LOGFILE Write-OutPut "ScanReportURL: ",$($ReportURL) >> $LOGFILE Write-OutPut "ScreenShotURL: ",$($ScreenShot) >> $LOGFILE Start-Sleep -s 3 } function Submit-URL-Virustotal { # submit URL $BODY = @{ "url" = "$URL"; "apikey" = "$VIRUSTOTAL_API_KEY" } $SCAN = Invoke-RestMethod -Method 'POST' -Uri 'https://www.virustotal.com/vtapi/v2/url/scan' -Body $BODY Start-Sleep -s 15 # Get Report $RESOURCE = $SCAN.scan_id $BODY_RPT = @{ "resource" = "$RESOURCE"; "apikey" = "$VIRUSTOTAL_API_KEY" } $REPORT = Invoke-RestMethod -Method 'POST' -Uri 'https://www.virustotal.com/vtapi/v2/url/report' -Body $BODY_RPT Write-OutPut "VirusTotal URL Scan Report: " >> $LOGFILE Write-OutPut $($REPORT.permalink) >> $LOGFILE Write-OutPut "POSITIVES | TOTAL" >> $LOGFILE Write-OutPut $($REPORT.positives) " | " $($REPORT.total) >> $LOGFILE } function Submit-FILE-Virustotal { Do { # check the file report $BODY_RPT = @{ "resource" = "$HASH"; "apikey" = "$VIRUSTOTAL_API_KEY" } $REPORT = Invoke-RestMethod -Method 'POST' -Uri 'https://www.virustotal.com/vtapi/v2/file/report' -Body $BODY_RPT if ($REPORT.response_code -eq 0){ # scan a file Start-Sleep -s 15 $BODY = @{ "apikey" = "$VIRUSTOTAL_API_KEY"; "file" = "$FILEPATH" } $SCAN = Invoke-RestMethod -Method 'POST' -Uri 'https://www.virustotal.com/vtapi/v2/file/scan' -Body $BODY $HASH = $SCAN.sha256 } Start-Sleep -s 15 }Until ($REPORT.response_code -eq 1) Write-OutPut "VirusTotal File Scan Report: " >> $LOGFILE Write-OutPut $($REPORT.permalink) >> $LOGFILE Write-OutPut "POSITIVES | TOTAL" >> $LOGFILE Write-OutPut $($REPORT.positives) " | " $($REPORT.total) >> $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 $TextBody = $CdoMessage.Fields.Item("urn:schemas:httpmail:textdescription").Value $HTMLBody = $CdoMessage.Fields.Item("urn:schemas:httpmail:htmldescription").Value $EmailBODY = $TextBody + $HTMLBody $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 Submit-URL-Virustotal Submit-URLSCAN Google-Safe-Browsing } } $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 $ALGORITHM = (Get-FileHash ($ATTFILENAME)).Algorithm $HASH = (Get-FileHash ($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=====================" >> $LOGFILE ExtractURLFromPDF }else{ if ( -not ([string]::IsNullOrEmpty($FILEPATH)) ){ Submit-FILE-Virustotal Submit-FILE-OPSWAT } } } } } 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") ){ 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 '>','>' -replace '<','<' -replace ''',"'" | Out-File $HTMLREPFILE } function ExtractURLFromPDF { 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) $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 Submit-URL-Virustotal Submit-URLSCAN Google-Safe-Browsing } }else{ Write-OutPut "=====================No URL in the PDF file needs to scan=====================" >> $LOGFILE } $extractor.Reset() } 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 $DLLPATH $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) $FOLDERID = ($INBOX.FindFolders([Microsoft.Exchange.WebServices.Data.FolderView]::new(10)) | where { $_.DisplayName -eq $SUBFOLDER }).Id.UniqueID $PROPERTYSET = new-object Microsoft.Exchange.WebServices.Data.PropertySet([Microsoft.Exchange.WebServices.Data.BasePropertySet]::FirstClassProperties) $PROPERTYSET.RequestedBodyType = [Microsoft.Exchange.WebServices.Data.BodyType]::Text [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 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 >> $LOGFILE Submit-URL-Virustotal Submit-URLSCAN Google-Safe-Browsing } } foreach($ATTACH in $EMAIL.Attachments){ $EXTENSION = [System.IO.Path]::GetExtension($ATTACH.Name.ToString().ToLower()) # 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("")) } $ATTFILE = new-object System.IO.FileStream(($ATTFILENAME), [System.IO.FileMode]::Create) $ATTFILE.Write($AttachmentData, 0, $AttachmentData.Length) $ATTFILE.Close() Write-OutPut "Downloaded Attachment : " ($ATTFILENAME) >> $LOGFILE $ALGORITHM = (Get-FileHash ($ATTFILENAME)).Algorithm $HASH = (Get-FileHash ($ATTFILENAME)).Hash.ToLower() $FILEPATH = (Get-FileHash ($ATTFILENAME)).Path Write-OutPut "Attachment $ALGORITHM Hash : " $HASH >> $LOGFILE if ( $EXTENSION -eq ".eml" ){ FromEmailAttachment $ATTFILENAME } else{ if ( $EXTENSION -eq ".pdf" ){ Write-OutPut "=====================Extract URLs from the PDF file=====================" >> $LOGFILE ExtractURLFromPDF Submit-FILE-Virustotal Submit-FILE-OPSWAT }else{ if ( -not ([string]::IsNullOrEmpty($FILEPATH)) ){ Submit-FILE-Virustotal Submit-FILE-OPSWAT } } } } } Write-OutPut "================================END=================================" >> $LOGFILE ConvertLogToHTML $REPLYTO = $($EMAIL.From.Address.ToString()) $REPLYSUBJECT = "AUTO-REPLY/Security Scan Report-- "+$($EMAIL.Subject) $SMTPSERVER = Get-Content .\init.conf | findstr SMTPSERVER | %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() } $REPLYCC = Get-Content .\init.conf | findstr REPLYCC | %{ $_.Split('=')[1]; } | foreach{ $_.ToString().Trim() } Send-MailMessage -SmtpServer $SMTPSERVER -To $REPLYTO -From $EMAILADDRESS -Cc $REPLYCC -Subject $REPLYSUBJECT -Body '<h4>Thanks for your email submission! Please view the Security Scan Report!</h4>' -BodyAsHtml -Attachments $HTMLREPFILE } $EMAIL.isRead = $true $EMAIL.Update([Microsoft.Exchange.WebServices.Data.ConflictResolutionMode]::AutoResolve) } }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 } } |