Identifies a high number (25) of failed Microsoft 365 user authentication attempts from a single IP address within 30 minutes, which could be indicative of a password spraying attack. An adversary may attempt a password spraying attack to obtain unauthorized access to user accounts.
Rule type: threshold
Risk score: 73
Runs every: 5m
Maximum alerts per execution: 100
- Microsoft 365
- Continuous Monitoring
- Identity and Access
Rule license: Elastic License v2
## Config The Office 365 Logs Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.
event.dataset:o365.audit and event.provider:(Exchange or AzureActiveDirectory) and event.category:authentication and event.action:("UserLoginFailed" or "PasswordLogonInitialAuthUsingPassword") and event.outcome:success
Framework: MITRE ATT&CKTM