Acronis - Login from Abnormal IP - Low Occurrence

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Id	84037130-a623-46c2-9144-0c0955ac4112
Rulename	Acronis - Login from Abnormal IP - Low Occurrence
Description	Suspicious login from an IP address observed up to two times in the last two weeks.
Severity	Medium
Tactics	InitialAccess
Techniques	T1078
Kind	Scheduled
Query frequency	1d
Query period	14d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Acronis Cyber Protect Cloud/Analytic Rules/AcronisLoginFromAbnormalIPLowOccurrence.yaml
Version	1.0.0
Arm template	84037130-a623-46c2-9144-0c0955ac4112.json

KQL

CommonSecurityLog
| where DeviceVendor == "Acronis audit"
| extend initiator_ip = tostring(parse_json(DeviceCustomString1).initiator_ip)
| summarize LoginCount = count() by initiator_ip
| where LoginCount <= 2
| order by LoginCount asc

YAML

tactics:
- InitialAccess
id: 84037130-a623-46c2-9144-0c0955ac4112
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Acronis Cyber Protect Cloud/Analytic Rules/AcronisLoginFromAbnormalIPLowOccurrence.yaml
description: Suspicious login from an IP address observed up to two times in the last two weeks.
version: 1.0.0
severity: Medium
triggerThreshold: 0
entityMappings:
- fieldMappings:
  - identifier: Address
    columnName: initiator_ip
  entityType: IP
alertDetailsOverride:
  alertDynamicProperties: []
  alertDisplayNameFormat: Acronis - Login from Abnormal IP ({{initiator_ip}}) - Low Occurrence ({{LoginCount}})
name: Acronis - Login from Abnormal IP - Low Occurrence
query: |
  CommonSecurityLog
  | where DeviceVendor == "Acronis audit"
  | extend initiator_ip = tostring(parse_json(DeviceCustomString1).initiator_ip)
  | summarize LoginCount = count() by initiator_ip
  | where LoginCount <= 2
  | order by LoginCount asc  
kind: Scheduled
queryPeriod: 14d
eventGroupingSettings:
  aggregationKind: AlertPerResult
queryFrequency: 1d
triggerOperator: gt
incidentConfiguration:
  groupingConfiguration:
    matchingMethod: Selected
    reopenClosedIncident: true
    groupByEntities:
    - IP
    lookbackDuration: P7D
    enabled: true
  createIncident: true
requiredDataConnectors: []
relevantTechniques:
- T1078

ARM