Harden Windows Security v0.6.8

Harden-Windows-Security Module/.editorconfig

@@ -341,3 +341,6 @@ dotnet_diagnostic.CA2265.severity = error
 
 # CA1507: Use nameof to express symbol names
 dotnet_diagnostic.CA1507.severity = error
+
+# IDE0001: Simplify name
+dotnet_diagnostic.IDE0001.severity = error

Harden-Windows-Security Module/Main files/.NETAssembliesToLoad.txt

@@ -1,15 +1,13 @@
 System
 System.IO
 System.Xml
-System.Net
 System.Data
 WindowsBase
 System.Xaml
 System.Linq
 System.Memory
 System.Console
 System.Windows
-System.CodeDom
 System.Runtime
 System.Net.Http
 System.Xml.Linq
@@ -30,11 +28,9 @@ System.Threading.Tasks
 System.Linq.Expressions
 System.Threading.Thread
 System.Xml.ReaderWriter
-WindowsFormsIntegration
 System.DirectoryServices
 Microsoft.Win32.Registry
 System.Security.Principal
-System.Reflection.Metadata
 System.Diagnostics.Process
 Microsoft.Win32.Primitives
 System.Diagnostics.EventLog

Harden-Windows-Security Module/Main files/C#/CimInstances/BitLocker-AddKeyProtectors.cs

@@ -394,7 +394,7 @@ public static void AddTpmAndStartupKeyProtector(string DriveLetter, string Start
             {
                 // If the key wasn't saved successfully, remove the protector as a safety measure
 
-                var deleteKeyProtectorArgs = VolumeInfo.GetMethodParameters("DeleteKeyProtector");
+                ManagementBaseObject deleteKeyProtectorArgs = VolumeInfo.GetMethodParameters("DeleteKeyProtector");
                 deleteKeyProtectorArgs["VolumeKeyProtectorID"] = ProtectKeyWithTPMAndStartupKeyMethodInvocationResult["VolumeKeyProtectorID"];
                 _ = VolumeInfo.InvokeMethod("DeleteKeyProtector", deleteKeyProtectorArgs, null);
 
@@ -619,7 +619,7 @@ public static void AddSidProtector(string DriveLetter, string SID, bool ServiceA
             SecurityIdentifier SIDResult = new(SID);
 
             // Prepare the method with arguments
-            var protectWithSidArgs = VolumeInfo.GetMethodParameters("ProtectKeyWithAdSid");
+            ManagementBaseObject protectWithSidArgs = VolumeInfo.GetMethodParameters("ProtectKeyWithAdSid");
             protectWithSidArgs["FriendlyName"] = null;
             protectWithSidArgs["SidString"] = SIDResult.Value;
             protectWithSidArgs["Flags"] = flags;

Harden-Windows-Security Module/Main files/C#/CimInstances/BitLocker-DataCollection.cs

@@ -21,7 +21,7 @@ public partial class BitLocker
     {
 
         // Class that stores the information about each key protector
-        public class KeyProtector
+        public sealed class KeyProtector
         {
             public KeyProtectorType? KeyProtectorType { get; set; }
             public string? KeyProtectorID { get; set; }
@@ -33,7 +33,7 @@ public class KeyProtector
         }
 
         // class that stores the information about BitLocker protected volumes
-        public class BitLockerVolume
+        public sealed class BitLockerVolume
         {
             public string? MountPoint { get; set; }
             public EncryptionMethod? EncryptionMethod { get; set; }
@@ -224,7 +224,7 @@ public static BitLockerVolume GetEncryptedVolumeInfo(string targetVolume)
                 try
                 {
                     // Try to use the GetEncryptionMethod method to get the EncryptionMethod and EncryptionMethodFlags properties
-                    var currentEncryptionMethod = InvokeCimMethod(volume, "GetEncryptionMethod", null);
+                    ManagementBaseObject? currentEncryptionMethod = InvokeCimMethod(volume, "GetEncryptionMethod", null);
                     if (currentEncryptionMethod is not null && Convert.ToUInt32(currentEncryptionMethod["ReturnValue"], CultureInfo.InvariantCulture) == 0)
                     {
                         uint EncryptionMethodNum = Convert.ToUInt32(currentEncryptionMethod["EncryptionMethod"], CultureInfo.InvariantCulture);
@@ -470,21 +470,15 @@ public static List<BitLockerVolume> GetAllEncryptedVolumeInfo(bool OnlyNonOSDriv
                 BitLockerVolume volume = GetEncryptedVolumeInfo(driveLetter + ":");
 
                 // If only Non-OS Drives are requested, skip any other drive types
-                if (OnlyNonOSDrives)
+                if (OnlyNonOSDrives && volume.VolumeType is not VolumeType.FixedDisk)
                 {
-                    if (volume.VolumeType is not VolumeType.FixedDisk)
-                    {
-                        continue;
-                    }
+                    continue;
                 }
 
                 // If only Removable Drives are requested, skip any other drive types
-                if (OnlyRemovableDrives)
+                if (OnlyRemovableDrives && volume.VolumeType is not VolumeType.Removable)
                 {
-                    if (volume.VolumeType is not VolumeType.Removable)
-                    {
-                        continue;
-                    }
+                    continue;
                 }
 
                 volumes.Add(volume);

Harden-Windows-Security Module/Main files/C#/CimInstances/BitLocker-Disable.cs

@@ -28,12 +28,18 @@ internal static void Disable(string DriveLetter)
             if (HasErrorsOccurred) { return; }
 
 
-            if (VolumeInfoExtended.ConversionStatus is BitLocker.ConversionStatus.FullyDecrypted)
+            if (VolumeInfoExtended.ConversionStatus is ConversionStatus.FullyDecrypted)
             {
                 Logger.LogMessage($"The drive {DriveLetter} is already decrypted", LogTypeIntel.InformationInteractionRequired);
                 return;
             }
 
+            if (VolumeInfoExtended.ConversionStatus is ConversionStatus.DecryptionInProgress)
+            {
+                Logger.LogMessage($"The drive {DriveLetter} is being decrypted, please wait.", LogTypeIntel.InformationInteractionRequired);
+                return;
+            }
+
 
             if (VolumeInfoExtended.VolumeType is VolumeType.OperationSystem)
             {

Harden-Windows-Security Module/Main files/C#/CimInstances/BitLocker-Enable.cs

@@ -63,7 +63,7 @@ internal static void Enable(string DriveLetter, OSEncryptionType OSEncryptionTyp
             if (HasErrorsOccurred) { return; }
 
             // If the drive is fully encrypted, check its key protectors
-            if (VolumeInfoExtended.ConversionStatus is BitLocker.ConversionStatus.FullyEncrypted)
+            if (VolumeInfoExtended.ConversionStatus is ConversionStatus.FullyEncrypted)
             {
                 Logger.LogMessage($"The OS drive is fully encrypted, will check if it conforms to the selected {OSEncryptionType} level.", LogTypeIntel.Information);
 
@@ -74,7 +74,7 @@ internal static void Enable(string DriveLetter, OSEncryptionType OSEncryptionTyp
 
 
                 // Get the key protectors of the OS Drive after making sure it is fully encrypted
-                List<BitLocker.KeyProtectorType?> KeyProtectors = VolumeInfoExtended.KeyProtector!
+                List<KeyProtectorType?> KeyProtectors = VolumeInfoExtended.KeyProtector!
                 .Select(kp => kp.KeyProtectorType).ToList();
 
                 if (KeyProtectors is null || KeyProtectors.Count == 0)
@@ -85,7 +85,7 @@ internal static void Enable(string DriveLetter, OSEncryptionType OSEncryptionTyp
                 }
 
                 // If Normal security level was selected
-                if (OSEncryptionType is BitLocker.OSEncryptionType.Normal)
+                if (OSEncryptionType is OSEncryptionType.Normal)
                 {
                     // If all the required key protectors for Normal security level are present, then return from the method
                     if (KeyProtectors.Contains(BitLocker.KeyProtectorType.RecoveryPassword) && KeyProtectors.Contains(BitLocker.KeyProtectorType.TpmPin))
@@ -188,7 +188,7 @@ internal static void Enable(string DriveLetter, OSEncryptionType OSEncryptionTyp
             }
 
             // Continue with full encryption if the drive is fully decrypted
-            else if (VolumeInfoExtended.ConversionStatus is BitLocker.ConversionStatus.FullyDecrypted)
+            else if (VolumeInfoExtended.ConversionStatus is ConversionStatus.FullyDecrypted)
             {
 
                 // Prepare the method with arguments
@@ -348,7 +348,7 @@ internal static void Enable(string DriveLetter, bool FreePlusUsedSpace)
 
 
             // Make sure the OS Drive is encrypted first, or else we would add recovery password key protector and then get error about the same problem during auto-unlock key protector enablement
-            BitLockerVolume OSDriveVolumeInfo = HardenWindowsSecurity.BitLocker.GetEncryptedVolumeInfo(Environment.GetEnvironmentVariable("SystemDrive") ?? "C:\\");
+            BitLockerVolume OSDriveVolumeInfo = BitLocker.GetEncryptedVolumeInfo(Environment.GetEnvironmentVariable("SystemDrive") ?? "C:\\");
             if (OSDriveVolumeInfo.ProtectionStatus is not BitLocker.ProtectionStatus.Protected)
             {
                 Logger.LogMessage($"Operation System drive must be encrypted first before encrypting Non-OS drives.", LogTypeIntel.ErrorInteractionRequired);
@@ -357,7 +357,7 @@ internal static void Enable(string DriveLetter, bool FreePlusUsedSpace)
             }
 
             // If the drive is already fully encrypted, check its key protectors
-            if (VolumeInfoExtended.ConversionStatus is BitLocker.ConversionStatus.FullyEncrypted)
+            if (VolumeInfoExtended.ConversionStatus is ConversionStatus.FullyEncrypted)
             {
 
                 Logger.LogMessage($"The drive {DriveLetter} is fully encrypted, will check its key protectors.", LogTypeIntel.Information);
@@ -369,7 +369,7 @@ internal static void Enable(string DriveLetter, bool FreePlusUsedSpace)
                 }
 
                 // Get the key protectors of the Drive after making sure it is fully encrypted
-                List<BitLocker.KeyProtectorType?> KeyProtectors = VolumeInfoExtended.KeyProtector!
+                List<KeyProtectorType?> KeyProtectors = VolumeInfoExtended.KeyProtector!
                 .Select(kp => kp.KeyProtectorType).ToList();
 
                 if (KeyProtectors is null || KeyProtectors.Count == 0)
@@ -385,7 +385,7 @@ internal static void Enable(string DriveLetter, bool FreePlusUsedSpace)
 
                     #region
                     // Delete any possible old leftover ExternalKey key protectors
-                    List<BitLocker.KeyProtector> ExternalKeys = VolumeInfoExtended.KeyProtector!.Where(kp => kp.KeyProtectorType is KeyProtectorType.ExternalKey).ToList();
+                    List<KeyProtector> ExternalKeys = VolumeInfoExtended.KeyProtector!.Where(kp => kp.KeyProtectorType is KeyProtectorType.ExternalKey).ToList();
 
                     // This step ensures any leftover or unbound external key key protectors will be removed and a working one will be added
                     // If the current one is working and bound, it won't be removed and will be gracefully skipped over.
@@ -430,11 +430,11 @@ internal static void Enable(string DriveLetter, bool FreePlusUsedSpace)
                     #region
                     // Check for presence of multiple recovery password key protectors
 
-                    List<BitLocker.KeyProtector> PasswordProtectors = VolumeInfoExtended.KeyProtector!.Where(kp => kp.KeyProtectorType is KeyProtectorType.RecoveryPassword).ToList();
+                    List<KeyProtector> PasswordProtectors = VolumeInfoExtended.KeyProtector!.Where(kp => kp.KeyProtectorType is KeyProtectorType.RecoveryPassword).ToList();
 
                     if (PasswordProtectors.Count > 1)
                     {
-                        Logger.LogMessage($"drive {DriveLetter} has {PasswordProtectors} recovery password key protectors. Usually only one is enough.", LogTypeIntel.Information);
+                        Logger.LogMessage($"drive {DriveLetter} has {PasswordProtectors.Count} recovery password key protectors. Usually only one is enough.", LogTypeIntel.Information);
                     }
                     #endregion
 
@@ -468,7 +468,7 @@ internal static void Enable(string DriveLetter, bool FreePlusUsedSpace)
             }
 
             // If the drive is fully decrypted, begin full drive encryption
-            else if (VolumeInfoExtended.ConversionStatus is BitLocker.ConversionStatus.FullyDecrypted)
+            else if (VolumeInfoExtended.ConversionStatus is ConversionStatus.FullyDecrypted)
             {
 
                 // Prepare the method with arguments

Harden-Windows-Security Module/Main files/C#/CimInstances/BitLocker-RemoveKeyProtectors.cs

@@ -45,14 +45,14 @@ public static void RemoveKeyProtector(string DriveLetter, string KeyProtectorID,
             }
 
 
-            if (DetectedKeyProtector.KeyProtectorType is BitLocker.KeyProtectorType.TpmNetworkKey)
+            if (DetectedKeyProtector.KeyProtectorType is KeyProtectorType.TpmNetworkKey)
             {
                 Logger.LogMessage($"The detected Key Protector type is TpmNetworkKey, it must be disabled and removed using group policies.", LogTypeIntel.Warning);
                 return;
             }
 
 
-            if (DetectedKeyProtector.KeyProtectorType is BitLocker.KeyProtectorType.PublicKey)
+            if (DetectedKeyProtector.KeyProtectorType is KeyProtectorType.PublicKey)
             {
                 Logger.LogMessage($"Removal of PublicKey type key protector not supported yet.", LogTypeIntel.Warning);
                 return;

Harden-Windows-Security Module/Main files/C#/CimInstances/ConfigDefenderHelper.cs

@@ -27,7 +27,7 @@ public static dynamic GetMpComputerStatus()
                 // Make sure the results isn't empty
                 if (results.Count > 0)
                 {
-                    var result = results.Cast<ManagementBaseObject>().FirstOrDefault();
+                    ManagementBaseObject? result = results.Cast<ManagementBaseObject>().FirstOrDefault();
 
                     if (result is not null)
                     {
@@ -41,13 +41,13 @@ public static dynamic GetMpComputerStatus()
                 }
                 else
                 {
-                    throw new HardenWindowsSecurity.PowerShellExecutionException("WMI query for 'MSFT_MpComputerStatus' failed");
+                    throw new PowerShellExecutionException("WMI query for 'MSFT_MpComputerStatus' failed");
                 }
             }
             catch (ManagementException ex)
             {
                 string errorMessage = $"WMI query for 'MSFT_MpComputerStatus' failed: {ex.Message}";
-                throw new HardenWindowsSecurity.PowerShellExecutionException(errorMessage, ex);
+                throw new PowerShellExecutionException(errorMessage, ex);
             }
         }
 
@@ -56,9 +56,10 @@ private static dynamic ConvertToDynamic(ManagementBaseObject managementObject)
         {
             // Creating a dynamic object to store the properties of the ManagementBaseObject
             dynamic expandoObject = new ExpandoObject();
-            var dictionary = (IDictionary<string, object>)expandoObject;
 
-            foreach (var property in managementObject.Properties)
+            IDictionary<string, object> dictionary = expandoObject;
+
+            foreach (PropertyData property in managementObject.Properties)
             {
                 if (property.Type == CimType.DateTime && property.Value is string dmtfTime)
                 {
@@ -102,14 +103,14 @@ public static void ManageMpPreference<T>(string preferenceName, T preferenceValu
             try
             {
                 // Connect to the WMI namespace
-                var scope = new ManagementScope(@"\\.\ROOT\Microsoft\Windows\Defender");
+                ManagementScope scope = new(@"\\.\ROOT\Microsoft\Windows\Defender");
                 scope.Connect();
 
                 // Create an instance of the MSFT_MpPreference class
-                using var mpPreferenceClass = new ManagementClass(scope, new ManagementPath("MSFT_MpPreference"), null);
+                using ManagementClass mpPreferenceClass = new(scope, new ManagementPath("MSFT_MpPreference"), null);
 
                 // Get the available methods for the class
-                var methodParams = mpPreferenceClass.GetMethodParameters(MethodName);
+                ManagementBaseObject methodParams = mpPreferenceClass.GetMethodParameters(MethodName);
 
                 if (preferenceValue is null)
                 {
@@ -157,11 +158,11 @@ public static void ManageMpPreference<T>(string preferenceName, T preferenceValu
                 // Invoke the method to apply the settings
                 _ = mpPreferenceClass.InvokeMethod(MethodName, methodParams, null);
 
-                HardenWindowsSecurity.Logger.LogMessage($"{preferenceName} set to {preferenceValue} (Type: {typeof(T).Name}) successfully.", LogTypeIntel.Information);
+                Logger.LogMessage($"{preferenceName} set to {preferenceValue} (Type: {typeof(T).Name}) successfully.", LogTypeIntel.Information);
             }
             catch (Exception ex)
             {
-                HardenWindowsSecurity.Logger.LogMessage($"Error setting {preferenceName}: {ex.Message}- You might need to update your OS first.", LogTypeIntel.Warning);
+                Logger.LogMessage($"Error setting {preferenceName}: {ex.Message}- You might need to update your OS first.", LogTypeIntel.Warning);
             }
         }
     }

Harden-Windows-Security Module/Main files/C#/CimInstances/FirewallHelper.cs

@@ -63,17 +63,17 @@ public static List<ManagementObject> GetFirewallRules(string ruleGroup, ushort d
             // catch exceptions specific to WMI
             catch (ManagementException mex)
             {
-                HardenWindowsSecurity.Logger.LogMessage($"WMI ManagementException: {mex.Message}", LogTypeIntel.Error);
+                Logger.LogMessage($"WMI ManagementException: {mex.Message}", LogTypeIntel.Error);
             }
             // Catch block for unauthorized access exceptions
             catch (UnauthorizedAccessException uex)
             {
-                HardenWindowsSecurity.Logger.LogMessage($"UnauthorizedAccessException: {uex.Message}", LogTypeIntel.Error);
+                Logger.LogMessage($"UnauthorizedAccessException: {uex.Message}", LogTypeIntel.Error);
             }
             // General catch block for any other exceptions
             catch (Exception ex)
             {
-                HardenWindowsSecurity.Logger.LogMessage($"An error occurred: {ex.Message}", LogTypeIntel.Error);
+                Logger.LogMessage($"An error occurred: {ex.Message}", LogTypeIntel.Error);
             }
 
             return results;
@@ -254,10 +254,10 @@ void DeleteFirewallRules(CimSession cimSession, string ruleName, string policySt
                 options.SetCustomOption("PolicyStore", policyStore, mustComply: true);
 
                 // Check for existing rules with the same name and delete them
-                var existingRules = cimSession.EnumerateInstances("root/StandardCimv2", "MSFT_NetFirewallRule", options)
+                IEnumerable<CimInstance> existingRules = cimSession.EnumerateInstances("root/StandardCimv2", "MSFT_NetFirewallRule", options)
                                               .Where(instance => instance.CimInstanceProperties["ElementName"].Value.ToString() == ruleName);
 
-                foreach (var rule in existingRules)
+                foreach (CimInstance rule in existingRules)
                 {
                     cimSession.DeleteInstance("root/StandardCimv2", rule, options);
                     Logger.LogMessage($"Deleted existing firewall rule: {ruleName}", LogTypeIntel.Information);