dfirhub

CertUtil

Windowsv1.1

Author: NVISO (@NVISOsecurity), 2thewes

description

Certutil

paths

4 paths
FileKnowledgeSystem CryptnetUrlCache
C:\Windows\System32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\
FileKnowledgeSystem WOW64 CryptnetUrlCache
C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\
FileKnowledgeUser CryptnetUrlCache
C:\Users\%user%\AppData\LocalLow\Microsoft\CryptnetUrlCache\
FileKnowledgeINetCache
C:\Users\%user%\AppData\Local\Microsoft\Windows\INetCache\IE\
› paths use Windows environment syntax

collection commands 

# PowerShell Artifact Collection Script
# Target: CertUtil
# Run as Administrator

#Requires -RunAsAdministrator

$ErrorActionPreference = "SilentlyContinue"
$DestBase = "D:\Evidence"

# Function to handle directory creation and copying
function Collect-Artifact {
    param (
        [string]$SourcePath,
        [string]$FolderName
    )
    $FullDest = Join-Path -Path $DestBase -ChildPath $FolderName
    if (-not (Test-Path -Path $FullDest)) {
        New-Item -ItemType Directory -Path $FullDest -Force | Out-Null
    }
    Copy-Item -Path $SourcePath -Destination $FullDest -Recurse -Force
}

# 1. System CryptnetUrlCache
Collect-Artifact -SourcePath "C:\Windows\System32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\\*" -FolderName "System_CryptnetUrlCache"

# 2. System WOW64 CryptnetUrlCache
Collect-Artifact -SourcePath "C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\\*" -FolderName "System_WOW64_CryptnetUrlCache"

# 3. User CryptnetUrlCache
$UserPath = Join-Path $env:USERPROFILE "AppData\LocalLow\Microsoft\CryptnetUrlCache\"
Collect-Artifact -SourcePath "$UserPath\*" -FolderName "User_CryptnetUrlCache"

# 4. INetCache
$UserPath = Join-Path $env:USERPROFILE "AppData\Local\Microsoft\Windows\INetCache\IE\"
Collect-Artifact -SourcePath "$UserPath\*" -FolderName "INetCache"

Write-Host "Collection complete!" -ForegroundColor Green

› Save as .ps1 and run as Administrator. Use: powershell -ExecutionPolicy Bypass -File script.ps1
› cyberchef recipes

Open in CyberChef to decode values extracted from this artifact.

references