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

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

ARM