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This query looks for suspicious request patterns to Exchange servers that fit a pattern observed by Silk Typhoon actors. The same query can be run on HTTPProxy logs from on-premise hosted Exchange servers. Reference: https://www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/
| Attribute | Value |
|---|---|
| Type | Analytic Rule |
| Solution | Standalone Content |
| ID | 23005e87-2d3a-482b-b03d-edbebd1ae151 |
| Severity | Medium |
| Kind | Scheduled |
| Tactics | InitialAccess |
| Techniques | T1190 |
| Required Connectors | AzureMonitor(IIS) |
| Source | View on GitHub |
This content item queries data from the following tables:
| Table | Transformations | Ingestion API | Lake-Only |
|---|---|---|---|
W3CIISLog |
✓ | ✗ | ? |
The following connectors provide data for this content item:
| Connector | Solution |
|---|---|
| ESI-Opt5ExchangeIISLogs | Microsoft Exchange Security - Exchange On-Premises |
Solutions: Microsoft Exchange Security - Exchange On-Premises
Browse: 🏠 · Solutions · Connectors · Methods · Tables · Content · Parsers · ASIM Parsers · ASIM Products · 📊