Wazuh - Large Number of Web errors from an IP

CommonSecurityLog
| where DeviceProduct =~ "Wazuh"
| where Activity has "Web server 400 error code."
| where Message has "403"
| extend HostName=substring(split(DeviceCustomString1,")")[0],1)
| summarize StartTime = min(TimeGenerated), EndTime = max(TimeGenerated), NumberOfErrors = dcount(SourceIP) by HostName, SourceIP
| where NumberOfErrors > 400
| sort by NumberOfErrors desc
| extend timestamp = StartTime

name: Wazuh - Large Number of Web errors from an IP
id: 2790795b-7dba-483e-853f-44aa0bc9c985
description: |
    'Identifies instances where Wazuh logged over 400 '403' Web Errors from one IP Address. To onboard Wazuh data into Sentinel please view: https://github.com/wazuh/wazuh-documentation/blob/master/source/azure/monitoring%20activity.rst'
triggerThreshold: 0
entityMappings:
- fieldMappings:
  - columnName: HostName
    identifier: HostName
  entityType: Host
- fieldMappings:
  - columnName: SourceIP
    identifier: Address
  entityType: IP
version: 1.0.4
triggerOperator: gt
query: |
  CommonSecurityLog
  | where DeviceProduct =~ "Wazuh"
  | where Activity has "Web server 400 error code."
  | where Message has "403"
  | extend HostName=substring(split(DeviceCustomString1,")")[0],1)
  | summarize StartTime = min(TimeGenerated), EndTime = max(TimeGenerated), NumberOfErrors = dcount(SourceIP) by HostName, SourceIP
  | where NumberOfErrors > 400
  | sort by NumberOfErrors desc
  | extend timestamp = StartTime  
tactics:
- CredentialAccess
kind: Scheduled
queryFrequency: 1d
severity: Low
metadata:
  author:
    name: Jordan Ross
  source:
    kind: Community
  categories:
    domains:
    - Security - Others
    - Networking
  support:
    tier: Community
queryPeriod: 1d
requiredDataConnectors: []
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/CommonSecurityLog/Wazuh-Large_Number_of_Web_errors_from_an_IP.yaml
relevantTechniques:
- T1110