Tenablead Password Guessing

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Id	44d74560-0cd1-4e73-a8f5-d16eeeba219e
Rulename	Tenable.ad Password Guessing
Description	Searches for bruteforce Password Guessing attacks.
Severity	High
Tactics	CredentialAccess
Techniques	T1110
Required data connectors	Tenable.ad
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/TenableAD/Analytic Rules/TenableAdPasswordGuessing.yaml
Version	1.0.1
Arm template	44d74560-0cd1-4e73-a8f5-d16eeeba219e.json

KQL

// For the query to work properly, make sure you have imported the afad_parser.kql parser into the workspace
// Retrieve the parser here: https://raw.githubusercontent.com/tenable/Azure-Sentinel/Tenable.ad-connector/Solutions/TenableAD/Parsers/afad_parser.kql
// Then, create the Kusto Function with alias afad_parser
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

queryPeriod: 2h
query: |
  // For the query to work properly, make sure you have imported the afad_parser.kql parser into the workspace
  // Retrieve the parser here: https://raw.githubusercontent.com/tenable/Azure-Sentinel/Tenable.ad-connector/Solutions/TenableAD/Parsers/afad_parser.kql
  // Then, create the Kusto Function with alias afad_parser
  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), '.'))  
name: Tenable.ad Password Guessing
entityMappings:
- fieldMappings:
  - columnName: HostName
    identifier: HostName
  - columnName: DnsDomain
    identifier: DnsDomain
  entityType: Host
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/TenableAD/Analytic Rules/TenableAdPasswordGuessing.yaml
requiredDataConnectors:
- connectorId: Tenable.ad
  dataTypes:
  - Tenable_ad_CL
description: |
    'Searches for bruteforce Password Guessing attacks.'
kind: Scheduled
version: 1.0.1
queryFrequency: 2h
severity: High
relevantTechniques:
- T1110
triggerOperator: gt
triggerThreshold: 0
tactics:
- CredentialAccess
id: 44d74560-0cd1-4e73-a8f5-d16eeeba219e

ARM