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Query shows 1200+ failed attempts by cIP per hour on server, then successful logon. Only includes > 1 user agent string or port. Could indicate successful probing and brute force success on IIS servers.
| Attribute | Value |
|---|---|
| Type | Hunting Query |
| Solution | Standalone Content |
| ID | 934011da-1fe6-4507-aadb-d3914c877bcd |
| Tactics | CredentialAccess |
| Techniques | T1110 |
| Required Connectors | AzureMonitor(IIS) |
| Source | [View on GitHub](https://github.com/Azure/Azure-Sentinel/blob/master/Hunting Queries/W3CIISLog/Potential_IIS_BF.yaml) |
This content item queries data from the following tables:
| Table | Selection Criteria | Transformations | Ingestion API | Lake-Only |
|---|---|---|---|---|
W3CIISLog |
cIP != "::1"cIP !startswith "192.168."csUserName != "-"scStatus in "401,403"scStatus startswith "20" |
✓ | ✗ | ✗ |
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
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