TIE Indicators of Exposures

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Id	f6ae2eb2-97c9-4e0f-ae73-7420ef80d99d
Rulename	TIE Indicators of Exposures
Description	Searches for triggered Indicators of Exposures.
Severity	Low
Tactics	CredentialAccess
Techniques	T1110
Required data connectors	TenableIE
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/Tenable App/Analytic Rules/TIEIndicatorsOfExposures.yaml
Version	1.0.1
Arm template	f6ae2eb2-97c9-4e0f-ae73-7420ef80d99d.json

KQL

// For the query to work properly, make sure you have imported the afad_parser.yaml parser into the workspace
// Retrieve the parser here: https://aka.ms/sentinel-TenableApp-afad-parser
// Then, create the Kusto Function with alias afad_parser
let SeverityTable=datatable(Severity:string,Level:int) [
  "low", 1,
  "medium", 2,
  "high", 3,
  "critical", 4
  ];
  afad_parser
  | where MessageType == 0
  | lookup kind=leftouter SeverityTable on Severity
  | order by Level
  | extend HostName = tostring(split(Host, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Host, '.'), 1, -1), '.'))

YAML

tactics:
- CredentialAccess
triggerOperator: gt
queryPeriod: 2h
queryFrequency: 2h
requiredDataConnectors:
- dataTypes:
  - Tenable_IE_CL
  connectorId: TenableIE
id: f6ae2eb2-97c9-4e0f-ae73-7420ef80d99d
relevantTechniques:
- T1110
triggerThreshold: 0
kind: Scheduled
entityMappings:
- fieldMappings:
  - identifier: HostName
    columnName: HostName
  - identifier: DnsDomain
    columnName: DnsDomain
  entityType: Host
query: |
  // For the query to work properly, make sure you have imported the afad_parser.yaml parser into the workspace
  // Retrieve the parser here: https://aka.ms/sentinel-TenableApp-afad-parser
  // Then, create the Kusto Function with alias afad_parser
  let SeverityTable=datatable(Severity:string,Level:int) [
    "low", 1,
    "medium", 2,
    "high", 3,
    "critical", 4
    ];
    afad_parser
    | where MessageType == 0
    | lookup kind=leftouter SeverityTable on Severity
    | order by Level
    | extend HostName = tostring(split(Host, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Host, '.'), 1, -1), '.'))  
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Tenable App/Analytic Rules/TIEIndicatorsOfExposures.yaml
name: TIE Indicators of Exposures
version: 1.0.1
severity: Low
description: |
    'Searches for triggered Indicators of Exposures.'

ARM