Alsid Password Spraying

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Id	9e20eb4e-cc0d-4349-a99d-cad756859dfb
Rulename	Alsid Password Spraying
Description	Searches for Password spraying attacks
Severity	High
Tactics	CredentialAccess
Techniques	T1110.003
Required data connectors	AlsidForAD
Kind	Scheduled
Query frequency	2h
Query period	2h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Alsid For AD/Analytic Rules/PasswordSpraying.yaml
Version	1.0.1
Arm template	9e20eb4e-cc0d-4349-a99d-cad756859dfb.json

KQL

afad_parser
| where MessageType == 2 and Codename == "Password Spraying"
| extend HostName = tostring(split(Host, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Host, '.'), 1, -1), '.'))

YAML

version: 1.0.1
name: Alsid Password Spraying
triggerOperator: gt
triggerThreshold: 0
description: |
    'Searches for Password spraying attacks'
relevantTechniques:
- T1110.003
id: 9e20eb4e-cc0d-4349-a99d-cad756859dfb
kind: Scheduled
queryPeriod: 2h
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Alsid For AD/Analytic Rules/PasswordSpraying.yaml
severity: High
status: Available
requiredDataConnectors:
- dataTypes:
  - AlsidForADLog_CL
  connectorId: AlsidForAD
tactics:
- CredentialAccess
queryFrequency: 2h
query: |
  afad_parser
  | where MessageType == 2 and Codename == "Password Spraying"
  | extend HostName = tostring(split(Host, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Host, '.'), 1, -1), '.'))  
entityMappings:
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: HostName
  - identifier: DnsDomain
    columnName: DnsDomain

ARM