Versasec CMS - Multiple Failed Login Attempts

Back


Id	B1DB8B7E-9D74-48C3-9683-74483CBEFF4E
Rulename	Versasec CMS - Multiple Failed Login Attempts
Description	Detects when Operator login failed to often.
Severity	High
Tactics	CredentialAccess
Techniques	T1110
Required data connectors	VersasecCms
Kind	Scheduled
Query frequency	5m
Query period	1h
Trigger threshold	5
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/VersasecCMS/Analytic Rules/VersasecCmsOperatorLoginFailed.yaml
Version	1.0.1
Arm template	B1DB8B7E-9D74-48C3-9683-74483CBEFF4E.json

KQL

let threshold = 5;
VersasecCmsSysLogs 
| where EventId == 2 
| sort by ComputerName asc, TimeGenerated asc
| extend TimeDiff = datetime_diff('minute', TimeGenerated, prev(TimeGenerated))
| where TimeDiff <= threshold and ComputerName == prev(ComputerName)

YAML

name: Versasec CMS - Multiple Failed Login Attempts
kind: Scheduled
tactics:
- CredentialAccess
triggerThreshold: 5
triggerOperator: gt
version: 1.0.1
status: Available
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    matchingMethod: AllEntities
    enabled: false
    lookbackDuration: 5m
    reopenClosedIncident: false
queryFrequency: 5m
id: B1DB8B7E-9D74-48C3-9683-74483CBEFF4E
requiredDataConnectors:
- connectorId: VersasecCms
  dataTypes:
  - VersasecCmsSysLogs
eventGroupingSettings:
  aggregationKind: SingleAlert
relevantTechniques:
- T1110
description: |
    Detects when Operator login failed to often.
entityMappings:
- entityType: Host
  fieldMappings:
  - columnName: ComputerName
    identifier: FullName
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/VersasecCMS/Analytic Rules/VersasecCmsOperatorLoginFailed.yaml
queryPeriod: 1h
severity: High
query: |
  let threshold = 5;
  VersasecCmsSysLogs 
  | where EventId == 2 
  | sort by ComputerName asc, TimeGenerated asc
  | extend TimeDiff = datetime_diff('minute', TimeGenerated, prev(TimeGenerated))
  | where TimeDiff <= threshold and ComputerName == prev(ComputerName)

ARM