Alsid Password Guessing

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Id	ba239935-42c2-472d-80ba-689186099ea1
Rulename	Alsid Password Guessing
Description	Searches for bruteforce Password Guessing attacks
Severity	High
Tactics	CredentialAccess
Techniques	T1110
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/PasswordGuessing.yaml
Version	1.0.1
Arm template	ba239935-42c2-472d-80ba-689186099ea1.json

KQL

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

YAML

name: Alsid Password Guessing
id: ba239935-42c2-472d-80ba-689186099ea1
description: |
    'Searches for bruteforce Password Guessing attacks'
triggerThreshold: 0
entityMappings:
- fieldMappings:
  - columnName: HostName
    identifier: HostName
  - columnName: DnsDomain
    identifier: DnsDomain
  entityType: Host
version: 1.0.1
triggerOperator: gt
query: |
  afad_parser
  | where MessageType == 2 and Codename == "Password Guessing"
  | extend HostName = tostring(split(Host, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Host, '.'), 1, -1), '.'))  
tactics:
- CredentialAccess
kind: Scheduled
queryFrequency: 2h
severity: High
queryPeriod: 2h
requiredDataConnectors:
- dataTypes:
  - AlsidForADLog_CL
  connectorId: AlsidForAD
status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Alsid For AD/Analytic Rules/PasswordGuessing.yaml
relevantTechniques:
- T1110

ARM