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

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

ARM