Dev-0270 Registry IOC - September 2022
| Id | 2566e99f-ad0f-472a-b9ac-d3899c9283e6 |
| Rulename | Dev-0270 Registry IOC - September 2022 |
| Description | The query below identifies modification of registry by Dev-0270 actor to disable security feature as well as to add ransom notes |
| Severity | High |
| Tactics | Impact |
| Techniques | T1486 |
| Required data connectors | MicrosoftThreatProtection SecurityEvents |
| Kind | Scheduled |
| Query frequency | 6h |
| Query period | 6h |
| Trigger threshold | 0 |
| Trigger operator | gt |
| Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Dev 0270 Detection and Hunting/Analytic Rules/Dev-0270RegistryIOCSep2022.yaml |
| Version | 1.0.2 |
| Arm template | 2566e99f-ad0f-472a-b9ac-d3899c9283e6.json |
(union isfuzzy=true
(SecurityEvent
| where EventID == 4688
| where (CommandLine has_all ('reg', 'add', 'HKLM\\SOFTWARE\\Policies\\', '/v','/t', 'REG_DWORD', '/d', '/f') and CommandLine has_any('DisableRealtimeMonitoring', 'UseTPMKey', 'UseTPMKeyPIN', 'UseAdvancedStartup', 'EnableBDEWithNoTPM', 'RecoveryKeyMessageSource'))
or CommandLine has_all ('reg', 'add', 'HKLM\\SOFTWARE\\Policies\\', '/v','/t', 'REG_DWORD', '/d', '/f', 'RecoveryKeyMessage', 'Your drives are Encrypted!', '@')
| project TimeGenerated, Computer, Account, AccountDomain, ProcessName, ProcessNameFullPath = NewProcessName, EventID, Activity, CommandLine, EventSourceName, Type
),
(DeviceProcessEvents
| where (InitiatingProcessCommandLine has_all(@'"reg"', 'add', @'"HKLM\SOFTWARE\Policies\', '/v','/t', 'REG_DWORD', '/d', '/f')
and InitiatingProcessCommandLine has_any('DisableRealtimeMonitoring', 'UseTPMKey', 'UseTPMKeyPIN', 'UseAdvancedStartup', 'EnableBDEWithNoTPM', 'RecoveryKeyMessageSource') )
or InitiatingProcessCommandLine has_all('"reg"', 'add', @'"HKLM\SOFTWARE\Policies\', '/v','/t', 'REG_DWORD', '/d', '/f', 'RecoveryKeyMessage', 'Your drives are Encrypted!', '@')
| extend Account = strcat(InitiatingProcessAccountDomain, @'\', InitiatingProcessAccountName), Computer = DeviceName
)
)
| extend HostName = tostring(split(Computer, ".")[0]), DomainIndex = toint(indexof(Computer, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)
| extend AccountName = tostring(split(Account, @'\')[1]), AccountNTDomain = tostring(split(Account, @'\')[0])
requiredDataConnectors:
- connectorId: SecurityEvents
dataTypes:
- SecurityEvent
- connectorId: MicrosoftThreatProtection
dataTypes:
- DeviceProcessEvents
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Dev 0270 Detection and Hunting/Analytic Rules/Dev-0270RegistryIOCSep2022.yaml
version: 1.0.2
status: Available
queryPeriod: 6h
severity: High
relevantTechniques:
- T1486
tactics:
- Impact
kind: Scheduled
queryFrequency: 6h
description: |
'The query below identifies modification of registry by Dev-0270 actor to disable security feature as well as to add ransom notes'
query: |
(union isfuzzy=true
(SecurityEvent
| where EventID == 4688
| where (CommandLine has_all ('reg', 'add', 'HKLM\\SOFTWARE\\Policies\\', '/v','/t', 'REG_DWORD', '/d', '/f') and CommandLine has_any('DisableRealtimeMonitoring', 'UseTPMKey', 'UseTPMKeyPIN', 'UseAdvancedStartup', 'EnableBDEWithNoTPM', 'RecoveryKeyMessageSource'))
or CommandLine has_all ('reg', 'add', 'HKLM\\SOFTWARE\\Policies\\', '/v','/t', 'REG_DWORD', '/d', '/f', 'RecoveryKeyMessage', 'Your drives are Encrypted!', '@')
| project TimeGenerated, Computer, Account, AccountDomain, ProcessName, ProcessNameFullPath = NewProcessName, EventID, Activity, CommandLine, EventSourceName, Type
),
(DeviceProcessEvents
| where (InitiatingProcessCommandLine has_all(@'"reg"', 'add', @'"HKLM\SOFTWARE\Policies\', '/v','/t', 'REG_DWORD', '/d', '/f')
and InitiatingProcessCommandLine has_any('DisableRealtimeMonitoring', 'UseTPMKey', 'UseTPMKeyPIN', 'UseAdvancedStartup', 'EnableBDEWithNoTPM', 'RecoveryKeyMessageSource') )
or InitiatingProcessCommandLine has_all('"reg"', 'add', @'"HKLM\SOFTWARE\Policies\', '/v','/t', 'REG_DWORD', '/d', '/f', 'RecoveryKeyMessage', 'Your drives are Encrypted!', '@')
| extend Account = strcat(InitiatingProcessAccountDomain, @'\', InitiatingProcessAccountName), Computer = DeviceName
)
)
| extend HostName = tostring(split(Computer, ".")[0]), DomainIndex = toint(indexof(Computer, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)
| extend AccountName = tostring(split(Account, @'\')[1]), AccountNTDomain = tostring(split(Account, @'\')[0])
id: 2566e99f-ad0f-472a-b9ac-d3899c9283e6
tags:
- Dev-0270
triggerThreshold: 0
entityMappings:
- fieldMappings:
- identifier: FullName
columnName: Account
- identifier: Name
columnName: AccountName
- identifier: NTDomain
columnName: AccountNTDomain
entityType: Account
- fieldMappings:
- identifier: FullName
columnName: Computer
- identifier: HostName
columnName: HostName
- identifier: DnsDomain
columnName: HostNameDomain
entityType: Host
name: Dev-0270 Registry IOC - September 2022
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workspace": {
"type": "String"
}
},
"resources": [
{
"apiVersion": "2023-02-01-preview",
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/2566e99f-ad0f-472a-b9ac-d3899c9283e6')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/2566e99f-ad0f-472a-b9ac-d3899c9283e6')]",
"properties": {
"alertRuleTemplateName": "2566e99f-ad0f-472a-b9ac-d3899c9283e6",
"customDetails": null,
"description": "'The query below identifies modification of registry by Dev-0270 actor to disable security feature as well as to add ransom notes'\n",
"displayName": "Dev-0270 Registry IOC - September 2022",
"enabled": true,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "Account",
"identifier": "FullName"
},
{
"columnName": "AccountName",
"identifier": "Name"
},
{
"columnName": "AccountNTDomain",
"identifier": "NTDomain"
}
]
},
{
"entityType": "Host",
"fieldMappings": [
{
"columnName": "Computer",
"identifier": "FullName"
},
{
"columnName": "HostName",
"identifier": "HostName"
},
{
"columnName": "HostNameDomain",
"identifier": "DnsDomain"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Dev 0270 Detection and Hunting/Analytic Rules/Dev-0270RegistryIOCSep2022.yaml",
"query": "(union isfuzzy=true\n(SecurityEvent\n| where EventID == 4688\n| where (CommandLine has_all ('reg', 'add', 'HKLM\\\\SOFTWARE\\\\Policies\\\\', '/v','/t', 'REG_DWORD', '/d', '/f') and CommandLine has_any('DisableRealtimeMonitoring', 'UseTPMKey', 'UseTPMKeyPIN', 'UseAdvancedStartup', 'EnableBDEWithNoTPM', 'RecoveryKeyMessageSource'))\n or CommandLine has_all ('reg', 'add', 'HKLM\\\\SOFTWARE\\\\Policies\\\\', '/v','/t', 'REG_DWORD', '/d', '/f', 'RecoveryKeyMessage', 'Your drives are Encrypted!', '@')\n| project TimeGenerated, Computer, Account, AccountDomain, ProcessName, ProcessNameFullPath = NewProcessName, EventID, Activity, CommandLine, EventSourceName, Type\n),\n(DeviceProcessEvents \n| where (InitiatingProcessCommandLine has_all(@'\"reg\"', 'add', @'\"HKLM\\SOFTWARE\\Policies\\', '/v','/t', 'REG_DWORD', '/d', '/f') \n and InitiatingProcessCommandLine has_any('DisableRealtimeMonitoring', 'UseTPMKey', 'UseTPMKeyPIN', 'UseAdvancedStartup', 'EnableBDEWithNoTPM', 'RecoveryKeyMessageSource') ) \n or InitiatingProcessCommandLine has_all('\"reg\"', 'add', @'\"HKLM\\SOFTWARE\\Policies\\', '/v','/t', 'REG_DWORD', '/d', '/f', 'RecoveryKeyMessage', 'Your drives are Encrypted!', '@')\n| extend Account = strcat(InitiatingProcessAccountDomain, @'\\', InitiatingProcessAccountName), Computer = DeviceName\n )\n )\n| extend HostName = tostring(split(Computer, \".\")[0]), DomainIndex = toint(indexof(Computer, '.'))\n| extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)\n| extend AccountName = tostring(split(Account, @'\\')[1]), AccountNTDomain = tostring(split(Account, @'\\')[0])\n",
"queryFrequency": "PT6H",
"queryPeriod": "PT6H",
"severity": "High",
"status": "Available",
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Impact"
],
"tags": [
"Dev-0270"
],
"techniques": [
"T1486"
],
"templateVersion": "1.0.2",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}