TEARDROP memory-only dropper
Id | 738702fd-0a66-42c7-8586-e30f0583f8fe |
Rulename | TEARDROP memory-only dropper |
Description | Identifies SolarWinds TEARDROP memory-only dropper IOCs in Window’s defender Exploit Guard activity 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 | High |
Tactics | Execution Persistence DefenseEvasion |
Techniques | T1543 T1059 T1027 |
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/Solutions/Microsoft 365 Defender/Analytic Rules/SolarWinds_TEARDROP_Process-IOCs.yaml |
Version | 1.0.5 |
Arm template | 738702fd-0a66-42c7-8586-e30f0583f8fe.json |
DeviceEvents
| where ActionType has "ExploitGuardNonMicrosoftSignedBlocked"
| where InitiatingProcessFileName has "svchost.exe" and FileName has "NetSetupSvc.dll"
| extend timestamp = TimeGenerated, AccountEntity = iff(isnotempty(InitiatingProcessAccountUpn), InitiatingProcessAccountUpn, InitiatingProcessAccountName),FileHashType = "SHA1"
| extend HostName = tostring(split(DeviceName, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(DeviceName, '.'), 1, -1), '.'))
requiredDataConnectors:
- connectorId: MicrosoftThreatProtection
dataTypes:
- DeviceEvents
triggerOperator: gt
queryFrequency: 1d
name: TEARDROP memory-only dropper
status: Available
queryPeriod: 1d
id: 738702fd-0a66-42c7-8586-e30f0583f8fe
description: |
Identifies SolarWinds TEARDROP memory-only dropper IOCs in Window's defender Exploit Guard activity
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: High
tags:
- Sunburst
- Solorigate
- NOBELIUM
query: |
DeviceEvents
| where ActionType has "ExploitGuardNonMicrosoftSignedBlocked"
| where InitiatingProcessFileName has "svchost.exe" and FileName has "NetSetupSvc.dll"
| extend timestamp = TimeGenerated, AccountEntity = iff(isnotempty(InitiatingProcessAccountUpn), InitiatingProcessAccountUpn, InitiatingProcessAccountName),FileHashType = "SHA1"
| extend HostName = tostring(split(DeviceName, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(DeviceName, '.'), 1, -1), '.'))
version: 1.0.5
kind: Scheduled
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft 365 Defender/Analytic Rules/SolarWinds_TEARDROP_Process-IOCs.yaml
entityMappings:
- entityType: Account
fieldMappings:
- identifier: Name
columnName: AccountEntity
- entityType: Host
fieldMappings:
- identifier: HostName
columnName: HostName
- identifier: DnsDomain
columnName: DnsDomain
- entityType: FileHash
fieldMappings:
- identifier: Algorithm
columnName: FileHashType
- identifier: Value
columnName: InitiatingProcessSHA1
relevantTechniques:
- T1543
- T1059
- T1027
tactics:
- Execution
- Persistence
- DefenseEvasion
triggerThreshold: 0
{
"$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/738702fd-0a66-42c7-8586-e30f0583f8fe')]",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/738702fd-0a66-42c7-8586-e30f0583f8fe')]",
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
"kind": "Scheduled",
"apiVersion": "2022-11-01-preview",
"properties": {
"displayName": "TEARDROP memory-only dropper",
"description": "Identifies SolarWinds TEARDROP memory-only dropper IOCs in Window's defender Exploit Guard activity\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\n",
"severity": "High",
"enabled": true,
"query": "DeviceEvents\n| where ActionType has \"ExploitGuardNonMicrosoftSignedBlocked\"\n| where InitiatingProcessFileName has \"svchost.exe\" and FileName has \"NetSetupSvc.dll\"\n| extend timestamp = TimeGenerated, AccountEntity = iff(isnotempty(InitiatingProcessAccountUpn), InitiatingProcessAccountUpn, InitiatingProcessAccountName),FileHashType = \"SHA1\"\n| extend HostName = tostring(split(DeviceName, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(DeviceName, '.'), 1, -1), '.'))\n",
"queryFrequency": "P1D",
"queryPeriod": "P1D",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0,
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Execution",
"Persistence",
"DefenseEvasion"
],
"techniques": [
"T1543",
"T1059",
"T1027"
],
"alertRuleTemplateName": "738702fd-0a66-42c7-8586-e30f0583f8fe",
"customDetails": null,
"entityMappings": [
{
"fieldMappings": [
{
"identifier": "Name",
"columnName": "AccountEntity"
}
],
"entityType": "Account"
},
{
"fieldMappings": [
{
"identifier": "HostName",
"columnName": "HostName"
},
{
"identifier": "DnsDomain",
"columnName": "DnsDomain"
}
],
"entityType": "Host"
},
{
"fieldMappings": [
{
"identifier": "Algorithm",
"columnName": "FileHashType"
},
{
"identifier": "Value",
"columnName": "InitiatingProcessSHA1"
}
],
"entityType": "FileHash"
}
],
"tags": [
"Sunburst",
"Solorigate",
"NOBELIUM"
],
"templateVersion": "1.0.5",
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft 365 Defender/Analytic Rules/SolarWinds_TEARDROP_Process-IOCs.yaml",
"status": "Available"
}
}
]
}