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DeepBlueHash-collector.ps1
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DeepBlueHash-collector.ps1
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$hashdirectory=".\hashes\"
$events = get-winevent @{logname="Microsoft-Windows-Sysmon/Operational";id=1,6,7}
ForEach ($event in $events) {
if ($event.id -eq 1){ # Process creation
$path=$event.Properties[3].Value # Full path of the file
$hash=$event.Properties[11].Value # Hashes
}
Else{
# Hash and path are part of the message field in Sysmon events 6 and 7. Need to parse the XML
$eventXML = [xml]$event.ToXml()
If ($event.id -eq 6){ # Driver (.sys) load
$path=$eventxml.Event.EventData.Data[1]."#text" # Full path of the file
$hash=$eventXML.Event.EventData.Data[2]."#text" # Hashes
}
ElseIf ($event.id -eq 7){ # Image (.dll) load
$path=$eventxml.Event.EventData.Data[4]."#text" # Full path of the file
$hash=$eventXML.Event.EventData.Data[5]."#text" # Hashes
}
Else{
Out-Host "Logic error 1, should not reach here..."
Exit 1
}
}
# Multiple hashes may be logged, we want SHA256. Remove everything through "SHA256="
$SHA256= $hash -Replace "^.*SHA256=",""
# Split the string on commas, grab field 0
$SHA256=$SHA256.Split(",")[0]
if ($SHA256 -Match '^[0-9A-F]{64}$'){ # SHA256 hashes are 64 character hex strings
$hashfile="$hashdirectory\$SHA256"
if (-not (Test-Path "$hashfile*")){
# Hash file doesn't exist (or any variants with extensions), create it
$path | Set-Content $hashfile
}
}
Else{
Out-Host "No SHA256 hash found. Ensure Sysmon is creating SHA256 hashes"
}
}