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Microsoft Defender for Endpoint (MDE) lacks a centralized library of all possible detections and alerts, unlike other Microsoft Defender products (Defender for Identity, Cloud Apps, etc.). This gap forces threat hunters to manually track detection capabilities, potentially duplicating efforts or missing critical alerts.
You Should Know: MDE Detection Workarounds & Commands
1. Export Existing MDE Detections
Use PowerShell to extract current detection rules from MDE:
Get-MpThreatDetection | Export-Csv -Path "MDE_Detections.csv" -NoTypeInformation
2. Check Alert History via Advanced Hunting
Run KQL queries in Microsoft Defender Security Center to review past alerts:
AlertInfo | project AlertName, Severity, DetectionSource | distinct AlertName
3. Monitor Real-Time Detections
Enable audit logging and stream alerts to a SIEM:
Set-MpPreference -EnableAuditMode $true
4. Compare with MITRE ATT&CK Mappings
Microsoft provides partial mappings of MDE detections to MITRE ATT&CK:
curl -s "https://attack.mitre.org/matrices/enterprise/" | grep -i "Defender"
5. Leverage Microsoft’s Detection Rules GitHub
Some detection logic is open-sourced:
git clone https://github.com/Azure/Azure-Sentinel.git
6. Custom Detection Script (Linux)
Check Defender logs for recent detections:
sudo cat /var/log/microsoft/mdatp/.log | grep "detection"
7. Windows Event Logs for Defender
Filter Defender-related events:
Get-WinEvent -LogName "Microsoft-Windows-Windows Defender/Operational" | Where-Object { $_.Id -eq 1116 }
8. API-Based Detection Pull
Use Microsoft Graph API to fetch alerts (requires auth token):
curl -H "Authorization: Bearer $token" "https://api.securitycenter.microsoft.com/api/alerts"
What Undercode Say
The absence of a detection library in MDE creates inefficiencies for blue teams. While Microsoft may withhold this for competitive reasons, threat hunters must rely on:
– Custom scripts (PowerShell/KQL) to catalog detections.
– MITRE ATT&CK cross-referencing for coverage gaps.
– Community-driven efforts (like Frank Duff’s mappings).
A partial solution involves aggregating logs, API calls, and open-source rules. Until Microsoft provides an official library, automation is key.
Expected Output:
- A CSV of MDE detections (
MDE_Detections.csv). - KQL query results of distinct alerts.
- MITRE ATT&CK mappings for Defender.
Prediction:
Microsoft will eventually release a detection library for MDE due to growing demand, but it may be restricted to premium tiers or partners.
URLs Referenced:
References:
Reported By: Frankmcgovern In – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
