OCI - Unexpected user agent

Back


Id	a0b9a7ca-3e6d-4996-ae35-759df1d67a54
Rulename	OCI - Unexpected user agent
Description	Detects unexpected user agent strings.
Severity	Medium
Tactics	InitialAccess
Techniques	T1190
Required data connectors	OracleCloudInfrastructureLogsConnector
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/Oracle Cloud Infrastructure/Analytic Rules/OCIUnexpectedUserAgent.yaml
Version	1.0.0
Arm template	a0b9a7ca-3e6d-4996-ae35-759df1d67a54.json

KQL

OCILogs
| where isnotempty(HttpUserAgentOriginal)
| where strlen(HttpUserAgentOriginal) <= 10
| extend IPCustomEntity = SrcIpAddr

YAML

severity: Medium
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Oracle Cloud Infrastructure/Analytic Rules/OCIUnexpectedUserAgent.yaml
id: a0b9a7ca-3e6d-4996-ae35-759df1d67a54
entityMappings:
- fieldMappings:
  - identifier: Address
    columnName: IPCustomEntity
  entityType: IP
kind: Scheduled
status: Available
tactics:
- InitialAccess
queryFrequency: 1h
requiredDataConnectors:
- connectorId: OracleCloudInfrastructureLogsConnector
  dataTypes:
  - OCILogs
relevantTechniques:
- T1190
version: 1.0.0
description: |
    'Detects unexpected user agent strings.'
triggerThreshold: 0
query: |
  OCILogs
  | where isnotempty(HttpUserAgentOriginal)
  | where strlen(HttpUserAgentOriginal) <= 10
  | extend IPCustomEntity = SrcIpAddr  
queryPeriod: 1h
name: OCI - Unexpected user agent

ARM