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

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

ARM