58 lines
2.7 KiB
PowerShell
58 lines
2.7 KiB
PowerShell
# Requires Posh-VirusTotal: https://github.com/darkoperator/Posh-VirusTotal
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#
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# Plus a (free) VirusTotal API Key: https://www.virustotal.com/en/documentation/public-api/
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#
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$hashdirectory = ".\hashes"
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$whitelistfile=".\file-whitelist.csv"
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# Load the whitelist into a hash table
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if (Test-Path $whitelistfile){
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$whitelist = Get-Content $whitelistfile | Select-String '^[^#]' | ConvertFrom-Csv
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$hashes=@{}
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foreach($entry in $whitelist){
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$hashes[$entry.sha256]=$entry.path
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}
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}
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Get-ChildItem $hashdirectory | Foreach-Object{
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if ($_.Name -Match '^[0-9A-F]{64}$'){ # SHA256 hashes are 64 character hex strings
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$SHA256=$_.Name
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if ($hashes.containsKey($SHA256)){
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Rename-Item -Path "$hashdirectory\$SHA256" -NewName "$SHA256.whitelisted"
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}
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Else{
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try{
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$VTreport = Get-VTFileReport $SHA256
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}
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catch {
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Write-Host "`r`nAttempted to run: Get-VTFileReport $SHA256`r`r"
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Write-Host "Error: " $_.Exception.Message "`n"
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Write-Host "Have you installed Posh-VirusTotal and set the VirusTotal API key?"
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Write-Host " - See: https://github.com/darkoperator/Posh-VirusTotal`r`n"
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Write-Host "Once you have installed Posh-VirusTotal and have a VirusTotal API key, run the following command:`r`n"
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Write-Host "Set-VTAPIKey -APIKey <API Key>`r`n"
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Write-Host "Exiting...`n"
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exit
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}
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if ($VTreport.positives -eq 0){
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# File is clean
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Rename-Item -Path "$hashdirectory\$SHA256" -NewName "$SHA256.clean"
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}
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ElseIf ($VTreport.positives -gt 0){
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# File is flagged by Virustotal
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$positives=$VTreport.positives
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Write-Host " - Hash was detected by " + $positives + " Virustotal scanners`r`n"
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if ($positives -eq 1){
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Write-Host " - Don't Panic (yet)! There is only one positive, which may be a sign of a false positive.`r`n"
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Write-Host " - Check the VirusTotal report for more information.`r`n"
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}
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Write-Host " - See $hashdirectory\$SHA256.Virustotal for the full report"
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$VTreport | Set-Content "$hashdirectory\$SHA256.Virustotal"
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# Rename original hash file, add the Virustotal positive count as a numbered extension
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$SHA256.$positives
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Rename-Item -Path "$hashdirectory\$SHA256" -NewName "$SHA256.$positives"
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}
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# Wait 15 seconds between submissions, for public Virustotal API keys
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Start-Sleep -s 15
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}
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}
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} |