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Identifies the top 10 external sender addresses delivering inbound emails classified as malware. If you want to exclude your own organization's domains (including subdomains), add a filter after the malware filter, e.g.: | where SenderFromAddress !contains ".yourdomain.com" (Replace "yourdomain.com" with your actual domain.) Based on Defender for Office 365 workbook: https://techcommunity.microsoft.com/blog/microsoftdefenderforoffice365blog/part-2-build-custom-email-security-reports-and-dashbo
| Attribute | Value |
|---|---|
| Type | Hunting Query |
| Solution | GitHub Only |
| ID | 530ef5e4-7ee4-4d70-a8e2-a06459605c02 |
| Tactics | InitialAccess |
| Techniques | T1566 |
| Required Connectors | MicrosoftThreatProtection |
| Source | [View on GitHub](https://github.com/Azure/Azure-Sentinel/blob/master/Hunting Queries/Microsoft%20365%20Defender/Email%20and%20Collaboration%20Queries/General/Top%2010%20External%20Senders%20%28Malware%29.yaml) |
This content item queries data from the following tables:
| Table | Selection Criteria | Transformations | Ingestion API | Lake-Only |
|---|---|---|---|---|
EmailEvents |
EmailDirection == "Inbound"SenderFromAddress !contains ".yourdomain.com"ThreatTypes has "Malware" |
✓ | ✗ | ✓ |
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