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This query dynamically identifies Exchange servers and then looks for instances where the IIS worker process initiates a call out to a remote URL using either cmd.exe or powershell.exe. This behaviour was described as post-compromise behaviour following exploitation of CVE-2022-41040 and CVE-2022-41082, this pattern of activity was use to download additional tools to the server. This suspicious activity is generic.
| Attribute | Value |
|---|---|
| Type | Analytic Rule |
| Solution | Standalone Content |
| ID | 2c701f94-783c-4cd4-bc9b-3b3334976090 |
| Severity | Medium |
| Kind | Scheduled |
| Tactics | Execution |
| Techniques | T1059.001, T1059.003 |
| Required Connectors | AzureMonitor(IIS), MicrosoftThreatProtection |
| 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 · 📊