Netskope - UnsanctionedRisky Cloud App Access Shadow IT

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Id	cdc01279-d6ea-41b1-a32d-49d726be95b8
Rulename	Netskope - Unsanctioned/Risky Cloud App Access (Shadow IT)
Description	Alerts when users access unsanctioned or risky cloud applications based on Cloud Confidence Level (CCL) and app tags. Detects Shadow IT usage.
Severity	Medium
Tactics	InitialAccess Exfiltration
Techniques	T1199 T1567
Required data connectors	NetskopeWebTxConnector
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/NetskopeWebTx/Analytic Rules/NetskopeWebtx_Rule10.yaml
Version	1.0.0
Arm template	cdc01279-d6ea-41b1-a32d-49d726be95b8.json

KQL

NetskopeWebTransactions_CL
| where TimeGenerated > ago(1h)
| where isnotempty(CsUsername) and isnotempty(XCsApp)
| where XCsAppTags contains 'Unsanctioned' 
    or XCsAppCcl =~ 'poor'
    or XCsAppCcl =~ 'low'
    or XCsAppCci < 50
| summarize 
    EventCount = count(),
    TotalBytesMB = round(sum(Bytes) / 1048576.0, 2),
    Activities = make_set(XCsAppActivity),
    FirstSeen = min(TimeGenerated),
    LastSeen = max(TimeGenerated)
    by 
    CsUsername,
    XCsApp,
    XCsAppCategory,
    XCsAppCcl,
    XCsAppCci,
    XCsAppTags,
    XCCountry,
    XCDevice
| extend RiskLevel = case(
    XCsAppCci < 30, 'Critical',
    XCsAppCci < 50, 'High',
    XCsAppCci < 70, 'Medium',
    'Low')
| project 
    TimeGenerated = LastSeen,
    User = CsUsername,
    RiskyApplication = XCsApp,
    AppCategory = XCsAppCategory,
    CloudConfidenceLevel = XCsAppCcl,
    CloudConfidenceIndex = XCsAppCci,
    AppTags = XCsAppTags,
    RiskLevel,
    Country = XCCountry,
    Device = XCDevice,
    Activities,
    EventCount,
    DataTransferMB = TotalBytesMB

YAML

OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/NetskopeWebTx/Analytic Rules/NetskopeWebtx_Rule10.yaml
query: |
  NetskopeWebTransactions_CL
  | where TimeGenerated > ago(1h)
  | where isnotempty(CsUsername) and isnotempty(XCsApp)
  | where XCsAppTags contains 'Unsanctioned' 
      or XCsAppCcl =~ 'poor'
      or XCsAppCcl =~ 'low'
      or XCsAppCci < 50
  | summarize 
      EventCount = count(),
      TotalBytesMB = round(sum(Bytes) / 1048576.0, 2),
      Activities = make_set(XCsAppActivity),
      FirstSeen = min(TimeGenerated),
      LastSeen = max(TimeGenerated)
      by 
      CsUsername,
      XCsApp,
      XCsAppCategory,
      XCsAppCcl,
      XCsAppCci,
      XCsAppTags,
      XCCountry,
      XCDevice
  | extend RiskLevel = case(
      XCsAppCci < 30, 'Critical',
      XCsAppCci < 50, 'High',
      XCsAppCci < 70, 'Medium',
      'Low')
  | project 
      TimeGenerated = LastSeen,
      User = CsUsername,
      RiskyApplication = XCsApp,
      AppCategory = XCsAppCategory,
      CloudConfidenceLevel = XCsAppCcl,
      CloudConfidenceIndex = XCsAppCci,
      AppTags = XCsAppTags,
      RiskLevel,
      Country = XCCountry,
      Device = XCDevice,
      Activities,
      EventCount,
      DataTransferMB = TotalBytesMB  
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: Name
    columnName: User
- entityType: CloudApplication
  fieldMappings:
  - identifier: Name
    columnName: RiskyApplication
kind: Scheduled
triggerOperator: gt
requiredDataConnectors:
- dataTypes:
  - NetskopeWebTransactions_CL
  connectorId: NetskopeWebTxConnector
tactics:
- InitialAccess
- Exfiltration
triggerThreshold: 0
description: |
    Alerts when users access unsanctioned or risky cloud applications based on Cloud Confidence Level (CCL) and app tags. Detects Shadow IT usage.
queryPeriod: 1h
version: 1.0.0
queryFrequency: 1h
severity: Medium
name: Netskope - Unsanctioned/Risky Cloud App Access (Shadow IT)
id: cdc01279-d6ea-41b1-a32d-49d726be95b8
status: Available
relevantTechniques:
- T1199
- T1567

ARM