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Adversaries with no prior knowledge of legitimate credentials within the system or environment may guess passwords to attempt access to accounts. Emotet, for example, has been observed using a hard-coded list of passwords to brute-force user accounts. The query below generates an output of all users with 'High' BlastRadius that perform failed Sign-in:Invalid username or password.
| Attribute | Value |
|---|---|
| Type | Hunting Query |
| Solution | UEBA Essentials |
| ID | 77a58c08-bc8e-48b3-8fe9-6c38fd011cd9 |
| Tactics | CredentialAccess |
| Techniques | T1110.001 |
| Required Connectors | BehaviorAnalytics, AzureActiveDirectory |
| Source | View on GitHub |
This content item queries data from the following tables:
| Table | Transformations | Ingestion API | Lake-Only |
|---|---|---|---|
BehaviorAnalytics |
✓ | ✗ | ? |
SigninLogs |
✓ | ✗ | ? |
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