SUNBURST suspicious SolarWinds child processes (Normalized Process Events)
Id | 631d02df-ab51-46c1-8d72-32d0cfec0720 |
Rulename | SUNBURST suspicious SolarWinds child processes (Normalized Process Events) |
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 To use this analytics rule, make sure you have deployed the ASIM normalization parsers |
Severity | Medium |
Tactics | Execution Persistence |
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/ASimProcess/imProcess_SolarWinds_SUNBURST_Process-IOCs.yaml |
Version | 1.1.3 |
Arm template | 631d02df-ab51-46c1-8d72-32d0cfec0720.json |
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"]);
imProcessCreate
| where Process hassuffix 'solarwinds.businesslayerhost.exe'
| where not(Process has_any (excludeProcs))
| extend
timestamp = TimeGenerated,
AccountCustomEntity = ActorUsername,
HostCustomEntity = User,
AlgorithmCustomEntity = "MD5",
FileHashCustomEntity = TargetProcessMD5 // Change to *hash* once implemented
kind: Scheduled
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/ASimProcess/imProcess_SolarWinds_SUNBURST_Process-IOCs.yaml
severity: Medium
tags:
- version: 1.0.0
Id: 4a3073ac-7383-48a9-90a8-eb6716183a54
- SchemaVersion: 0.1.0
Schema: ASIMProcessEvent
- Solorigate
- NOBELIUM
name: SUNBURST suspicious SolarWinds child processes (Normalized Process Events)
entityMappings:
- entityType: Account
fieldMappings:
- columnName: AccountCustomEntity
identifier: FullName
- entityType: Host
fieldMappings:
- columnName: HostCustomEntity
identifier: FullName
- entityType: FileHash
fieldMappings:
- columnName: AlgorithmCustomEntity
identifier: Algorithm
- columnName: FileHashCustomEntity
identifier: Value
metadata:
support:
tier: Community
categories:
domains:
- Security - 0-day Vulnerability
source:
kind: Community
author:
name: Yuval Naor
queryFrequency: 1d
triggerThreshold: 0
queryPeriod: 1d
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
To use this analytics rule, make sure you have deployed the [ASIM normalization parsers](https://aka.ms/ASimProcessEvent)'
id: 631d02df-ab51-46c1-8d72-32d0cfec0720
version: 1.1.3
tactics:
- Execution
- Persistence
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"]);
imProcessCreate
| where Process hassuffix 'solarwinds.businesslayerhost.exe'
| where not(Process has_any (excludeProcs))
| extend
timestamp = TimeGenerated,
AccountCustomEntity = ActorUsername,
HostCustomEntity = User,
AlgorithmCustomEntity = "MD5",
FileHashCustomEntity = TargetProcessMD5 // Change to *hash* once implemented
requiredDataConnectors: []
triggerOperator: gt
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workspace": {
"type": "String"
}
},
"resources": [
{
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/631d02df-ab51-46c1-8d72-32d0cfec0720')]",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/631d02df-ab51-46c1-8d72-32d0cfec0720')]",
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
"kind": "Scheduled",
"apiVersion": "2022-11-01-preview",
"properties": {
"displayName": "SUNBURST suspicious SolarWinds child processes (Normalized Process Events)",
"description": "Identifies suspicious child processes of SolarWinds.Orion.Core.BusinessLayer.dll that may be evidence of the SUNBURST backdoor\nReferences:\n- https://www.fireeye.com/blog/threat-research/2020/12/evasive-attacker-leverages-solarwinds-supply-chain-compromises-with-sunburst-backdoor.html\n- https://gist.github.com/olafhartong/71ffdd4cab4b6acd5cbcd1a0691ff82f\nTo use this analytics rule, make sure you have deployed the [ASIM normalization parsers](https://aka.ms/ASimProcessEvent)'\n",
"severity": "Medium",
"enabled": true,
"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\"]);\nimProcessCreate\n| where Process hassuffix 'solarwinds.businesslayerhost.exe'\n| where not(Process has_any (excludeProcs))\n| extend\n timestamp = TimeGenerated,\n AccountCustomEntity = ActorUsername,\n HostCustomEntity = User,\n AlgorithmCustomEntity = \"MD5\",\n FileHashCustomEntity = TargetProcessMD5 // Change to *hash* once implemented\n",
"queryFrequency": "P1D",
"queryPeriod": "P1D",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0,
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Execution",
"Persistence"
],
"alertRuleTemplateName": "631d02df-ab51-46c1-8d72-32d0cfec0720",
"customDetails": null,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"identifier": "FullName",
"columnName": "AccountCustomEntity"
}
]
},
{
"entityType": "Host",
"fieldMappings": [
{
"identifier": "FullName",
"columnName": "HostCustomEntity"
}
]
},
{
"entityType": "FileHash",
"fieldMappings": [
{
"identifier": "Algorithm",
"columnName": "AlgorithmCustomEntity"
},
{
"identifier": "Value",
"columnName": "FileHashCustomEntity"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/ASimProcess/imProcess_SolarWinds_SUNBURST_Process-IOCs.yaml",
"tags": [
{
"Id": "4a3073ac-7383-48a9-90a8-eb6716183a54",
"version": "1.0.0"
},
{
"Schema": "ASIMProcessEvent",
"SchemaVersion": "0.1.0"
},
"Solorigate",
"NOBELIUM"
],
"templateVersion": "1.1.3"
}
}
]
}