47 lines
2.3 KiB
PowerShell
47 lines
2.3 KiB
PowerShell
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# GreySec PHI Scanner - Windows Host Agent
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$ErrorActionPreference = 'SilentlyContinue'
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$results = @{
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hostname = $env:COMPUTERNAME
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timestamp = (Get-Date -Format "o")
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findings = @()
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}
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$extensions = @('*.txt','*.csv','*.log','*.json','*.xml','*.doc','*.docx','*.xls','*.xlsx','*.pdf','*.mdb','*.accdb','*.sql','*.cfg','*.ini','*.dat','*.bak')
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$locations = @("$env:USERPROFILE","$env:APPDATA","C:\Users","C:\ProgramData","C:\inetpub","C:\Windows\System32\config")
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$ssn = [regex]'\b\d{3}[-\s]\d{2}[-\s]\d{4}\b'
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$email = [regex]'\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b'
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$phone = [regex]'\b(\+?1[-.\s]?)?\(?\d{3}\)?[-.\s]?\d{3}[-.\s]?\d{4}\b'
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$mrn = [regex]'\b(MRN|Medical Record|EHR|ID)[:\s#]*\d{6,10}\b'
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$dob = [regex]'\b(0[1-9]|1[0-2])[/.-](0[1-9]|[12]\d|3[01])[/.-](19|20)\d{2}\b'
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$ip = [regex]'\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b'
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$zip4 = [regex]'\b\d{5}[-\s]\d{4}\b'
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$allPatterns = @($ssn,$email,$phone,$mrn,$dob,$ip,$zip4)
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$typeMap = @('SSN','Email','Phone','MRN','DOB','IP','ZIP4')
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foreach ($loc in $locations) {
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if (Test-Path $loc) {
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foreach ($ext in $extensions) {
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Get-ChildItem $loc -Recurse -Filter $ext -ErrorAction SilentlyContinue |
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Where-Object { $_.Length -lt 50MB } | ForEach-Object {
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$content = Get-Content $_.FullName -Raw -ErrorAction SilentlyContinue
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if ($content) {
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for ($i=0; $i -lt $allPatterns.Length; $i++) {
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$matches = $allPatterns[$i].Matches($content)
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foreach ($m in $matches) {
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$start = [Math]::Max(0, $m.Index - 30)
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$end = [Math]::Min($content.Length, $m.Index + $m.Length + 30)
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$ctx = $content.Substring($start, $end - $start).Replace("`n"," ").Replace("`r"," ")
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$results.findings += @{
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type = $typeMap[$i]
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value = $m.Value
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file = $_.FullName
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context = $ctx
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}
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}
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}
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}
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}
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}
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}
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}
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$results | ConvertTo-Json -Depth 5 | Out-File -FilePath C:\tmp\phi_scan_results.json -Encoding UTF8
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Write-Host "SCAN_COMPLETE: $($results.findings.Count) findings"
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