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https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git
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mukul975
234 lines
9.3 KiB
Python
234 lines
9.3 KiB
Python
#!/usr/bin/env python3
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"""
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Windows Defender Configuration Auditor
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Collects and audits Microsoft Defender for Endpoint settings across endpoints,
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identifies configuration gaps, and generates compliance reports.
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"""
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import json
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import subprocess
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import sys
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import os
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from datetime import datetime
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RECOMMENDED_SETTINGS = {
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"RealTimeProtectionEnabled": True,
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"BehaviorMonitoringEnabled": True,
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"IoavProtectionEnabled": True,
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"AntispywareEnabled": True,
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"AntivirusEnabled": True,
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"MAPSReporting": 2, # Advanced
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"SubmitSamplesConsent": 3, # SendAllSamples
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"PUAProtection": 1, # Enabled
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"DisableBlockAtFirstSeen": False,
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"CloudBlockLevel": 2, # High
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"CloudExtendedTimeout": 50,
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"EnableNetworkProtection": 1, # Enabled
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"EnableControlledFolderAccess": 1, # Enabled
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"SignatureUpdateInterval": 1, # Hourly
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}
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RECOMMENDED_ASR_RULES = {
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"BE9BA2D9-53EA-4CDC-84E5-9B1EEEE46550": {"name": "Block executable content from email", "mode": 1},
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"D4F940AB-401B-4EFC-AADC-AD5F3C50688A": {"name": "Block Office child processes", "mode": 1},
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"3B576869-A4EC-4529-8536-B80A7769E899": {"name": "Block Office executable creation", "mode": 1},
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"75668C1F-73B5-4CF0-BB93-3ECF5CB7CC84": {"name": "Block Office code injection", "mode": 1},
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"D3E037E1-3EB8-44C8-A917-57927947596D": {"name": "Block JS/VBS launching executables", "mode": 1},
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"5BEB7EFE-FD9A-4556-801D-275E5FFC04CC": {"name": "Block obfuscated scripts", "mode": 1},
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"92E97FA1-2EDF-4476-BDD6-9DD0B4DDDC7B": {"name": "Block Win32 API from macros", "mode": 1},
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"9E6C4E1F-7D60-472F-BA1A-A39EF669E4B2": {"name": "Block LSASS credential stealing", "mode": 1},
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"D1E49AAC-8F56-4280-B9BA-993A6D77406C": {"name": "Block PSExec/WMI processes", "mode": 1},
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"B2B3F03D-6A65-4F7B-A9C7-1C7EF74A9BA4": {"name": "Block untrusted USB processes", "mode": 1},
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"E6DB77E5-3DF2-4CF1-B95A-636979351E5B": {"name": "Block WMI persistence", "mode": 1},
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"56A863A9-875E-4185-98A7-B882C64B5CE5": {"name": "Block vulnerable signed drivers", "mode": 1},
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}
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def collect_defender_settings() -> dict:
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"""Collect current Defender settings via PowerShell."""
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ps_cmd = """
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$prefs = Get-MpPreference
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$status = Get-MpComputerStatus
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$result = @{
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Preferences = @{
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RealTimeProtectionEnabled = $prefs.DisableRealtimeMonitoring -eq $false
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BehaviorMonitoringEnabled = $prefs.DisableBehaviorMonitoring -eq $false
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IoavProtectionEnabled = $prefs.DisableIOAVProtection -eq $false
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AntispywareEnabled = $status.AntispywareEnabled
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AntivirusEnabled = $status.AntivirusEnabled
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MAPSReporting = $prefs.MAPSReporting
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SubmitSamplesConsent = $prefs.SubmitSamplesConsent
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PUAProtection = $prefs.PUAProtection
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DisableBlockAtFirstSeen = $prefs.DisableBlockAtFirstSeen
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CloudBlockLevel = $prefs.CloudBlockLevel
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CloudExtendedTimeout = $prefs.CloudExtendedTimeout
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EnableNetworkProtection = $prefs.EnableNetworkProtection
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EnableControlledFolderAccess = $prefs.EnableControlledFolderAccess
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SignatureUpdateInterval = $prefs.SignatureUpdateInterval
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}
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ASRRules = @{}
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Status = @{
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AMEngineVersion = $status.AMEngineVersion
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AMProductVersion = $status.AMProductVersion
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AntispywareSignatureVersion = $status.AntispywareSignatureVersion
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AntivirusSignatureVersion = $status.AntivirusSignatureVersion
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AntivirusSignatureLastUpdated = $status.AntivirusSignatureLastUpdated.ToString('o')
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FullScanEndTime = if($status.FullScanEndTime) { $status.FullScanEndTime.ToString('o') } else { 'Never' }
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QuickScanEndTime = if($status.QuickScanEndTime) { $status.QuickScanEndTime.ToString('o') } else { 'Never' }
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RealTimeProtectionEnabled = $status.RealTimeProtectionEnabled
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TamperProtectionSource = $status.IsTamperProtected
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}
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}
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$ids = $prefs.AttackSurfaceReductionRules_Ids
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$actions = $prefs.AttackSurfaceReductionRules_Actions
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if ($ids -and $actions) {
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for ($i=0; $i -lt $ids.Count; $i++) {
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$result.ASRRules[$ids[$i].ToString().ToUpper()] = $actions[$i]
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}
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}
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$result | ConvertTo-Json -Depth 3
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"""
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try:
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result = subprocess.run(
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["powershell", "-NoProfile", "-Command", ps_cmd],
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capture_output=True, text=True, timeout=30,
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)
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if result.returncode == 0 and result.stdout.strip():
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return json.loads(result.stdout)
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else:
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return {"error": result.stderr or "Failed to collect Defender settings"}
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except FileNotFoundError:
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return {"error": "PowerShell not available (requires Windows)"}
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except subprocess.TimeoutExpired:
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return {"error": "PowerShell command timed out"}
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except json.JSONDecodeError as e:
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return {"error": f"Failed to parse PowerShell output: {e}"}
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def audit_settings(settings: dict) -> dict:
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"""Audit collected settings against recommended baseline."""
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findings = {
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"compliant": [],
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"non_compliant": [],
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"asr_rules": {
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"enabled_block": [],
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"enabled_audit": [],
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"disabled": [],
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"missing": [],
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},
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"score": 0.0,
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}
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prefs = settings.get("Preferences", {})
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total_checks = 0
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passed_checks = 0
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for setting, expected in RECOMMENDED_SETTINGS.items():
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total_checks += 1
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actual = prefs.get(setting)
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if actual == expected:
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passed_checks += 1
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findings["compliant"].append({
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"setting": setting,
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"expected": expected,
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"actual": actual,
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})
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else:
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findings["non_compliant"].append({
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"setting": setting,
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"expected": expected,
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"actual": actual,
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"severity": "high" if setting in (
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"RealTimeProtectionEnabled", "AntivirusEnabled",
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"EnableNetworkProtection", "MAPSReporting",
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) else "medium",
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})
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asr_rules = settings.get("ASRRules", {})
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for rule_guid, rule_info in RECOMMENDED_ASR_RULES.items():
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total_checks += 1
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mode = asr_rules.get(rule_guid)
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if mode == 1:
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passed_checks += 1
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findings["asr_rules"]["enabled_block"].append({
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"guid": rule_guid, "name": rule_info["name"],
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})
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elif mode == 2:
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findings["asr_rules"]["enabled_audit"].append({
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"guid": rule_guid, "name": rule_info["name"],
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})
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elif mode == 0:
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findings["asr_rules"]["disabled"].append({
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"guid": rule_guid, "name": rule_info["name"],
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})
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else:
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findings["asr_rules"]["missing"].append({
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"guid": rule_guid, "name": rule_info["name"],
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})
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if total_checks > 0:
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findings["score"] = round((passed_checks / total_checks) * 100, 2)
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return findings
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def generate_report(settings: dict, findings: dict, output_path: str) -> None:
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"""Generate configuration audit report."""
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report = {
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"report_generated": datetime.utcnow().isoformat() + "Z",
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"defender_status": settings.get("Status", {}),
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"compliance_score": findings["score"],
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"total_compliant": len(findings["compliant"]),
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"total_non_compliant": len(findings["non_compliant"]),
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"asr_summary": {
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"block_mode": len(findings["asr_rules"]["enabled_block"]),
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"audit_mode": len(findings["asr_rules"]["enabled_audit"]),
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"disabled": len(findings["asr_rules"]["disabled"]),
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"not_configured": len(findings["asr_rules"]["missing"]),
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},
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"non_compliant_settings": findings["non_compliant"],
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"asr_details": findings["asr_rules"],
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}
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with open(output_path, "w", encoding="utf-8") as f:
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json.dump(report, f, indent=2)
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if __name__ == "__main__":
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output_dir = sys.argv[1] if len(sys.argv) > 1 else "."
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print("Collecting Microsoft Defender settings...")
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settings = collect_defender_settings()
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if "error" in settings:
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print(f"Error: {settings['error']}")
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print("This tool requires Windows with Microsoft Defender for Endpoint.")
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sys.exit(1)
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print("Auditing against recommended baseline...")
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findings = audit_settings(settings)
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report_path = os.path.join(output_dir, "defender_audit_report.json")
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generate_report(settings, findings, report_path)
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print(f"Audit report: {report_path}")
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print(f"\n--- Defender Configuration Audit ---")
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print(f"Compliance Score: {findings['score']}%")
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print(f"Compliant settings: {len(findings['compliant'])}")
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print(f"Non-compliant: {len(findings['non_compliant'])}")
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print(f"\nASR Rules:")
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print(f" Block mode: {len(findings['asr_rules']['enabled_block'])}")
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print(f" Audit mode: {len(findings['asr_rules']['enabled_audit'])}")
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print(f" Disabled: {len(findings['asr_rules']['disabled'])}")
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print(f" Not configured: {len(findings['asr_rules']['missing'])}")
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if findings["non_compliant"]:
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print(f"\nNon-compliant settings requiring remediation:")
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for item in findings["non_compliant"]:
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print(f" [{item['severity'].upper()}] {item['setting']}: expected={item['expected']}, actual={item['actual']}")
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