SUNBURST suspicious SolarWinds child processes

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Id	4a3073ac-7383-48a9-90a8-eb6716183a54
Rulename	SUNBURST suspicious SolarWinds child processes
Description	Identifies suspicious child processes of SolarWinds.Orion.Core.BusinessLayer.dll that may be evidence of the SUNBURST backdoor References: - https://www.fireeye.com/blog/threat-research/2020/12/evasive-attacker-leverages-solarwinds-supply-chain-compromises-with-sunburst-backdoor.html - https://gist.github.com/olafhartong/71ffdd4cab4b6acd5cbcd1a0691ff82f
Severity	Medium
Tactics	Execution Persistence
Required data connectors	MicrosoftThreatProtection
Kind	Scheduled
Query frequency	1d
Query period	1d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Detections/DeviceProcessEvents/SolarWinds_SUNBURST_Process-IOCs.yaml
Version	1.0.4
Arm template	4a3073ac-7383-48a9-90a8-eb6716183a54.json

KQL

let excludeProcs = dynamic([@"\SolarWinds\Orion\APM\APMServiceControl.exe", @"\SolarWinds\Orion\ExportToPDFCmd.Exe", @"\SolarWinds.Credentials\SolarWinds.Credentials.Orion.WebApi.exe", @"\SolarWinds\Orion\Topology\SolarWinds.Orion.Topology.Calculator.exe", @"\SolarWinds\Orion\Database-Maint.exe", @"\SolarWinds.Orion.ApiPoller.Service\SolarWinds.Orion.ApiPoller.Service.exe", @"\Windows\SysWOW64\WerFault.exe"]);
DeviceProcessEvents
| where InitiatingProcessFileName =~ "solarwinds.businesslayerhost.exe"
| where not(FolderPath has_any (excludeProcs))
| extend
    timestamp = TimeGenerated,
    InitiatingProcessAccountUPNSuffix = tostring(split(InitiatingProcessAccountUpn, "@")[1]),
    Algorithm = "MD5"

YAML

description: |
  Identifies suspicious child processes of SolarWinds.Orion.Core.BusinessLayer.dll that may be evidence of the SUNBURST backdoor
  References:
  - https://www.fireeye.com/blog/threat-research/2020/12/evasive-attacker-leverages-solarwinds-supply-chain-compromises-with-sunburst-backdoor.html
  - https://gist.github.com/olafhartong/71ffdd4cab4b6acd5cbcd1a0691ff82f  
severity: Medium
queryFrequency: 1d
query: |
  let excludeProcs = dynamic([@"\SolarWinds\Orion\APM\APMServiceControl.exe", @"\SolarWinds\Orion\ExportToPDFCmd.Exe", @"\SolarWinds.Credentials\SolarWinds.Credentials.Orion.WebApi.exe", @"\SolarWinds\Orion\Topology\SolarWinds.Orion.Topology.Calculator.exe", @"\SolarWinds\Orion\Database-Maint.exe", @"\SolarWinds.Orion.ApiPoller.Service\SolarWinds.Orion.ApiPoller.Service.exe", @"\Windows\SysWOW64\WerFault.exe"]);
  DeviceProcessEvents
  | where InitiatingProcessFileName =~ "solarwinds.businesslayerhost.exe"
  | where not(FolderPath has_any (excludeProcs))
  | extend
      timestamp = TimeGenerated,
      InitiatingProcessAccountUPNSuffix = tostring(split(InitiatingProcessAccountUpn, "@")[1]),
      Algorithm = "MD5"  
triggerThreshold: 0
metadata:
  categories:
    domains:
    - Security - Threat Protection
  source:
    kind: Community
  author:
    name: pemontto
  support:
    tier: Community
version: 1.0.4
name: SUNBURST suspicious SolarWinds child processes
queryPeriod: 1d
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/DeviceProcessEvents/SolarWinds_SUNBURST_Process-IOCs.yaml
requiredDataConnectors:
- dataTypes:
  - DeviceProcessEvents
  connectorId: MicrosoftThreatProtection
tags:
- Solorigate
- NOBELIUM
id: 4a3073ac-7383-48a9-90a8-eb6716183a54
kind: Scheduled
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: Name
    columnName: InitiatingProcessAccountName
  - identifier: NTDomain
    columnName: InitiatingProcessAccountDomain
  - identifier: Sid
    columnName: InitiatingProcessAccountSid
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: DeviceName
- entityType: FileHash
  fieldMappings:
  - identifier: Algorithm
    columnName: Algorithm
  - identifier: Value
    columnName: MD5
triggerOperator: gt
tactics:
- Execution
- Persistence

ARM