Starting or Stopping HealthService to Avoid Detection

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Id	2bc7b4ae-eeaa-4538-ba15-ef298ec1ffae
Rulename	Starting or Stopping HealthService to Avoid Detection
Description	This query detects events where an actor is stopping or starting HealthService to disable telemetry collection/detection from the agent. The query requires a SACL to audit for access request to the service.
Severity	Medium
Tactics	DefenseEvasion
Techniques	T1562.001
Required data connectors	SecurityEvents WindowsSecurityEvents
Kind	Scheduled
Query frequency	1d
Query period	1d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Windows Security Events/Analytic Rules/StartStopHealthService.yaml
Version	1.0.2
Arm template	2bc7b4ae-eeaa-4538-ba15-ef298ec1ffae.json

KQL

SecurityEvent
| where EventID == 4656
| extend EventData = parse_xml(EventData).EventData.Data
| mv-expand bagexpansion=array EventData
| evaluate bag_unpack(EventData)
| extend Key = tostring(column_ifexists('@Name', "")), Value = column_ifexists('#text', "")
| evaluate pivot(Key, any(Value), TimeGenerated, TargetAccount, Computer, EventSourceName, Channel, Task, Level, EventID, Activity, TargetLogonId, SourceComputerId, EventOriginId, Type, _ResourceId, TenantId, SourceSystem, ManagementGroupName, IpAddress, Account)
| extend ObjectServer = column_ifexists('ObjectServer', ""), ObjectType = column_ifexists('ObjectType', ""), ObjectName = column_ifexists('ObjectName', "")
| where isnotempty(ObjectServer) and isnotempty(ObjectType) and isnotempty(ObjectName)
| where ObjectServer =~ "SC Manager" and ObjectType =~ "SERVICE OBJECT" and ObjectName =~ "HealthService"
// Comment out the join below if the SACL only audits users that are part of the Network logon users, i.e. with user/group target pointing to "NU."
| join kind=leftouter (
  SecurityEvent
  | where EventID == 4624
) on TargetLogonId
| project TimeGenerated, Computer, Account, TargetAccount, IpAddress,TargetLogonId, ObjectServer, ObjectType, ObjectName
| extend HostName = tostring(split(Computer, ".")[0]), DomainIndex = toint(indexof(Computer, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)
| extend AccountName = tostring(split(TargetAccount, @'\')[1]), AccountNTDomain = tostring(split(TargetAccount, @'\')[0])
| extend timestamp = TimeGenerated

YAML

relevantTechniques:
- T1562.001
entityMappings:
- fieldMappings:
  - columnName: TargetAccount
    identifier: FullName
  - columnName: AccountName
    identifier: Name
  - columnName: AccountNTDomain
    identifier: NTDomain
  entityType: Account
- fieldMappings:
  - columnName: Computer
    identifier: FullName
  - columnName: HostName
    identifier: HostName
  - columnName: HostNameDomain
    identifier: DnsDomain
  entityType: Host
- fieldMappings:
  - columnName: IpAddress
    identifier: Address
  entityType: IP
triggerThreshold: 0
description: |
  'This query detects events where an actor is stopping or starting HealthService to disable telemetry collection/detection from the agent.
   The query requires a SACL to audit for access request to the service.'  
requiredDataConnectors:
- connectorId: SecurityEvents
  dataTypes:
  - SecurityEvent
- connectorId: WindowsSecurityEvents
  dataTypes:
  - SecurityEvent
triggerOperator: gt
version: 1.0.2
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Windows Security Events/Analytic Rules/StartStopHealthService.yaml
id: 2bc7b4ae-eeaa-4538-ba15-ef298ec1ffae
queryFrequency: 1d
query: |
  SecurityEvent
  | where EventID == 4656
  | extend EventData = parse_xml(EventData).EventData.Data
  | mv-expand bagexpansion=array EventData
  | evaluate bag_unpack(EventData)
  | extend Key = tostring(column_ifexists('@Name', "")), Value = column_ifexists('#text', "")
  | evaluate pivot(Key, any(Value), TimeGenerated, TargetAccount, Computer, EventSourceName, Channel, Task, Level, EventID, Activity, TargetLogonId, SourceComputerId, EventOriginId, Type, _ResourceId, TenantId, SourceSystem, ManagementGroupName, IpAddress, Account)
  | extend ObjectServer = column_ifexists('ObjectServer', ""), ObjectType = column_ifexists('ObjectType', ""), ObjectName = column_ifexists('ObjectName', "")
  | where isnotempty(ObjectServer) and isnotempty(ObjectType) and isnotempty(ObjectName)
  | where ObjectServer =~ "SC Manager" and ObjectType =~ "SERVICE OBJECT" and ObjectName =~ "HealthService"
  // Comment out the join below if the SACL only audits users that are part of the Network logon users, i.e. with user/group target pointing to "NU."
  | join kind=leftouter (
    SecurityEvent
    | where EventID == 4624
  ) on TargetLogonId
  | project TimeGenerated, Computer, Account, TargetAccount, IpAddress,TargetLogonId, ObjectServer, ObjectType, ObjectName
  | extend HostName = tostring(split(Computer, ".")[0]), DomainIndex = toint(indexof(Computer, '.'))
  | extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)
  | extend AccountName = tostring(split(TargetAccount, @'\')[1]), AccountNTDomain = tostring(split(TargetAccount, @'\')[0])
  | extend timestamp = TimeGenerated  
severity: Medium
kind: Scheduled
status: Available
queryPeriod: 1d
name: Starting or Stopping HealthService to Avoid Detection
tactics:
- DefenseEvasion
tags:
- Solorigate
- NOBELIUM

ARM