ADOAuditLogs
| where OperationName =~ "AuditLog.StreamDisabledByUser"
| extend StreamType = tostring(Data.ConsumerType)
| project-reorder TimeGenerated, Details, ActorUPN, IpAddress, UserAgent, StreamType
| extend timestamp = TimeGenerated
| extend AccountName = tostring(split(ActorUPN, "@")[0]), AccountUPNSuffix = tostring(split(ActorUPN, "@")[1])
relevantTechniques:
- T1562.008
queryPeriod: 1d
triggerOperator: gt
version: 1.0.5
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/AzureDevOpsAuditing/Analytic Rules/ADOAuditStreamDisabled.yaml
description: |
'Azure DevOps allow for audit logs to be streamed to external storage solutions such as SIEM solutions. An attacker looking to hide malicious Azure DevOps activity from defenders may look to disable data streams before conducting activity and then re-enabling the stream after (so as not to raise data threshold-based alarms). Looking for disabled audit streams can identify this activity, and due to the nature of the action its unlikely to have a high false positive rate.'
tactics:
- DefenseEvasion
severity: High
status: Available
kind: Scheduled
triggerThreshold: 0
queryFrequency: 1d
requiredDataConnectors: []
entityMappings:
- entityType: Account
fieldMappings:
- identifier: FullName
columnName: ActorUPN
- identifier: Name
columnName: AccountName
- identifier: UPNSuffix
columnName: AccountUPNSuffix
- entityType: IP
fieldMappings:
- identifier: Address
columnName: IpAddress
id: 4e8238bd-ff4f-4126-a9f6-09b3b6801b3d
query: |
ADOAuditLogs
| where OperationName =~ "AuditLog.StreamDisabledByUser"
| extend StreamType = tostring(Data.ConsumerType)
| project-reorder TimeGenerated, Details, ActorUPN, IpAddress, UserAgent, StreamType
| extend timestamp = TimeGenerated
| extend AccountName = tostring(split(ActorUPN, "@")[0]), AccountUPNSuffix = tostring(split(ActorUPN, "@")[1])
name: Azure DevOps Audit Stream Disabled
