Uniqkey - Sign-in from unfamiliar IP address | Microsoft Sentinel Analytic Rules

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Id	6909c70c-fb52-47a3-9eb9-3b8109b0b32a
Rulename	Uniqkey - Sign-in from unfamiliar IP address
Description	Identifies successful Uniqkey sign-ins (browser extension, mobile, web or desktop) originating from an IP address that has not been observed for that user during the trailing 14 days. A new source address can indicate session hijacking or use of stolen master credentials, particularly when combined with an unusual client system. Uniqkey audits successful authentications only, so pair this rule with identity-provider telemetry if failed sign-in coverage is required.
Severity	Low
Tactics	InitialAccess
Techniques	T1078
Required data connectors	UniqkeyEventsConnector
Kind	Scheduled
Query frequency	1h
Query period	14d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Uniqkey/Analytic%20Rules/Uniqkey%20-%20Sign-in%20from%20unfamiliar%20IP%20address.yaml
Version	1.0.0
Arm template	6909c70c-fb52-47a3-9eb9-3b8109b0b32a.json

KQL

let lookback = 14d;
let frequency = 1h;
let knownPairs =
    UniqkeyEvents_CL
    | where TimeGenerated between (ago(lookback) .. ago(frequency))
    | where Category == "authentication" and isnotempty(SrcIpAddr) and isnotempty(ActorEmail)
    | summarize by ActorEmail, SrcIpAddr;
UniqkeyEvents_CL
| where TimeGenerated > ago(frequency)
| where Category == "authentication" and isnotempty(SrcIpAddr) and isnotempty(ActorEmail)
| join kind=leftanti knownPairs on ActorEmail, SrcIpAddr
| summarize arg_max(TimeGenerated, Action, ActionId, ActorType, ClientSystem) by ActorEmail, SrcIpAddr
| project TimeGenerated, ActorEmail, ActorType, Action, ActionId, ClientSystem, SrcIpAddr

YAML

incidentConfiguration:
  groupingConfiguration:
    lookbackDuration: 1h
    reopenClosedIncident: false
    matchingMethod: AllEntities
    enabled: true
  createIncident: true
name: Uniqkey - Sign-in from unfamiliar IP address
suppressionDuration: 5h
suppressionEnabled: false
triggerOperator: gt
kind: Scheduled
queryFrequency: 1h
description: Identifies successful Uniqkey sign-ins (browser extension, mobile, web or desktop) originating from an IP address that has not been observed for that user during the trailing 14 days. A new source address can indicate session hijacking or use of stolen master credentials, particularly when combined with an unusual client system. Uniqkey audits successful authentications only, so pair this rule with identity-provider telemetry if failed sign-in coverage is required.
id: 6909c70c-fb52-47a3-9eb9-3b8109b0b32a
triggerThreshold: 0
queryPeriod: 14d
query: |-
  let lookback = 14d;
  let frequency = 1h;
  let knownPairs =
      UniqkeyEvents_CL
      | where TimeGenerated between (ago(lookback) .. ago(frequency))
      | where Category == "authentication" and isnotempty(SrcIpAddr) and isnotempty(ActorEmail)
      | summarize by ActorEmail, SrcIpAddr;
  UniqkeyEvents_CL
  | where TimeGenerated > ago(frequency)
  | where Category == "authentication" and isnotempty(SrcIpAddr) and isnotempty(ActorEmail)
  | join kind=leftanti knownPairs on ActorEmail, SrcIpAddr
  | summarize arg_max(TimeGenerated, Action, ActionId, ActorType, ClientSystem) by ActorEmail, SrcIpAddr
  | project TimeGenerated, ActorEmail, ActorType, Action, ActionId, ClientSystem, SrcIpAddr
version: 1.0.0
requiredDataConnectors:
- connectorId: UniqkeyEventsConnector
  dataTypes:
  - UniqkeyEvents_CL
eventGroupingSettings:
  aggregationKind: SingleAlert
severity: Low
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Uniqkey/Analytic%20Rules/Uniqkey%20-%20Sign-in%20from%20unfamiliar%20IP%20address.yaml
relevantTechniques:
- T1078
tactics:
- InitialAccess
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: ActorEmail
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: SrcIpAddr
  entityType: IP

ARM

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/6909c70c-fb52-47a3-9eb9-3b8109b0b32a')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/6909c70c-fb52-47a3-9eb9-3b8109b0b32a')]",
      "properties": {
        "alertRuleTemplateName": "6909c70c-fb52-47a3-9eb9-3b8109b0b32a",
        "customDetails": null,
        "description": "Identifies successful Uniqkey sign-ins (browser extension, mobile, web or desktop) originating from an IP address that has not been observed for that user during the trailing 14 days. A new source address can indicate session hijacking or use of stolen master credentials, particularly when combined with an unusual client system. Uniqkey audits successful authentications only, so pair this rule with identity-provider telemetry if failed sign-in coverage is required.",
        "displayName": "Uniqkey - Sign-in from unfamiliar IP address",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "ActorEmail",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "SrcIpAddr",
                "identifier": "Address"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "SingleAlert"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "lookbackDuration": "PT1H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Uniqkey/Analytic%20Rules/Uniqkey%20-%20Sign-in%20from%20unfamiliar%20IP%20address.yaml",
        "query": "let lookback = 14d;\nlet frequency = 1h;\nlet knownPairs =\n    UniqkeyEvents_CL\n    | where TimeGenerated between (ago(lookback) .. ago(frequency))\n    | where Category == \"authentication\" and isnotempty(SrcIpAddr) and isnotempty(ActorEmail)\n    | summarize by ActorEmail, SrcIpAddr;\nUniqkeyEvents_CL\n| where TimeGenerated > ago(frequency)\n| where Category == \"authentication\" and isnotempty(SrcIpAddr) and isnotempty(ActorEmail)\n| join kind=leftanti knownPairs on ActorEmail, SrcIpAddr\n| summarize arg_max(TimeGenerated, Action, ActionId, ActorType, ClientSystem) by ActorEmail, SrcIpAddr\n| project TimeGenerated, ActorEmail, ActorType, Action, ActionId, ClientSystem, SrcIpAddr",
        "queryFrequency": "PT1H",
        "queryPeriod": "P14D",
        "severity": "Low",
        "subTechniques": [],
        "suppressionDuration": "PT5H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1078"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}