Caramel Tsunami Actor IOC - July 2021
| Id | 066395ac-ef91-4993-8bf6-25c61ab0ca5a |
| Rulename | Caramel Tsunami Actor IOC - July 2021 |
| Description | Identifies a match across IOC’s related to an actor tracked by Microsoft as Caramel Tsunami |
| Severity | High |
| Tactics | Persistence |
| Techniques | T1546 |
| Required data connectors | WindowsForwardedEvents |
| 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/Windows Forwarded Events/Analytic Rules/CaramelTsunami_IOC_WindowsEvent.yaml |
| Version | 1.0.4 |
| Arm template | 066395ac-ef91-4993-8bf6-25c61ab0ca5a.json |
let iocs = externaldata(DateAdded:string,IoC:string,Type:string,TLP:string) [@"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Feeds/SOURGUM.csv"] with (format="csv", ignoreFirstRecord=True);
let file_path1 = (iocs | where Type =~ "filepath1" | project IoC);
let file_path2 = (iocs | where Type =~ "filepath2" | project IoC);
let file_path3 = (iocs | where Type =~ "filepath3" | project IoC);
let reg_key = (iocs | where Type =~ "regkey" | project IoC);
WindowsEvent
| where EventID == 4688 and (EventData has_any (file_path1) or EventData has_any (file_path2) or EventData has_any (file_path3) or EventData has_any ('reg add') or EventData has_any (reg_key) )
| extend CommandLine = tostring(EventData.CommandLine)
| extend NewProcessName = tostring(EventData.NewProcessName)
| extend ParentProcessName = tostring(EventData.ParentProcessName)
| where (CommandLine has_any (file_path1)) or
(CommandLine has_any (file_path3)) or
(CommandLine has 'reg add' and CommandLine has_any (reg_key) and CommandLine has_any (file_path2)) or
(NewProcessName has_any (file_path1)) or
(NewProcessName has_any (file_path3)) or
(ParentProcessName has_any (file_path1)) or
(ParentProcessName has_any (file_path3))
| extend Account = strcat(EventData.SubjectDomainName,"\\", EventData.SubjectUserName)
| extend NewProcessId = tostring(EventData.NewProcessId)
| extend IP = tostring(EventData.IpAddress)
| project TimeGenerated, Computer, NewProcessName, ParentProcessName, Account, NewProcessId, Type, IP
| extend Alert = 'SOURGUM IOC detected'
| extend AccountName = tostring(split(Account, @'\')[1]), AccountNTDomain = tostring(split(Account, @'\')[0])
| extend HostName = tostring(split(Computer, ".")[0]), DomainIndex = toint(indexof(Computer, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)
relevantTechniques:
- T1546
name: Caramel Tsunami Actor IOC - July 2021
requiredDataConnectors:
- dataTypes:
- WindowsEvent
connectorId: WindowsForwardedEvents
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
- fieldMappings:
- identifier: Address
columnName: IP
entityType: IP
- fieldMappings:
- identifier: ProcessId
columnName: NewProcessId
entityType: Process
triggerThreshold: 0
id: 066395ac-ef91-4993-8bf6-25c61ab0ca5a
tactics:
- Persistence
version: 1.0.4
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Windows Forwarded Events/Analytic Rules/CaramelTsunami_IOC_WindowsEvent.yaml
queryPeriod: 6h
kind: Scheduled
tags:
- Caramel Tsunami
queryFrequency: 6h
severity: High
status: Available
description: |
'Identifies a match across IOC's related to an actor tracked by Microsoft as Caramel Tsunami'
query: |
let iocs = externaldata(DateAdded:string,IoC:string,Type:string,TLP:string) [@"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Feeds/SOURGUM.csv"] with (format="csv", ignoreFirstRecord=True);
let file_path1 = (iocs | where Type =~ "filepath1" | project IoC);
let file_path2 = (iocs | where Type =~ "filepath2" | project IoC);
let file_path3 = (iocs | where Type =~ "filepath3" | project IoC);
let reg_key = (iocs | where Type =~ "regkey" | project IoC);
WindowsEvent
| where EventID == 4688 and (EventData has_any (file_path1) or EventData has_any (file_path2) or EventData has_any (file_path3) or EventData has_any ('reg add') or EventData has_any (reg_key) )
| extend CommandLine = tostring(EventData.CommandLine)
| extend NewProcessName = tostring(EventData.NewProcessName)
| extend ParentProcessName = tostring(EventData.ParentProcessName)
| where (CommandLine has_any (file_path1)) or
(CommandLine has_any (file_path3)) or
(CommandLine has 'reg add' and CommandLine has_any (reg_key) and CommandLine has_any (file_path2)) or
(NewProcessName has_any (file_path1)) or
(NewProcessName has_any (file_path3)) or
(ParentProcessName has_any (file_path1)) or
(ParentProcessName has_any (file_path3))
| extend Account = strcat(EventData.SubjectDomainName,"\\", EventData.SubjectUserName)
| extend NewProcessId = tostring(EventData.NewProcessId)
| extend IP = tostring(EventData.IpAddress)
| project TimeGenerated, Computer, NewProcessName, ParentProcessName, Account, NewProcessId, Type, IP
| extend Alert = 'SOURGUM IOC detected'
| extend AccountName = tostring(split(Account, @'\')[1]), AccountNTDomain = tostring(split(Account, @'\')[0])
| extend HostName = tostring(split(Computer, ".")[0]), DomainIndex = toint(indexof(Computer, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)
triggerOperator: gt
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workspace": {
"type": "String"
}
},
"resources": [
{
"apiVersion": "2024-01-01-preview",
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/066395ac-ef91-4993-8bf6-25c61ab0ca5a')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/066395ac-ef91-4993-8bf6-25c61ab0ca5a')]",
"properties": {
"alertRuleTemplateName": "066395ac-ef91-4993-8bf6-25c61ab0ca5a",
"customDetails": null,
"description": "'Identifies a match across IOC's related to an actor tracked by Microsoft as Caramel Tsunami'\n",
"displayName": "Caramel Tsunami Actor IOC - July 2021",
"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"
}
]
},
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "IP",
"identifier": "Address"
}
]
},
{
"entityType": "Process",
"fieldMappings": [
{
"columnName": "NewProcessId",
"identifier": "ProcessId"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Windows Forwarded Events/Analytic Rules/CaramelTsunami_IOC_WindowsEvent.yaml",
"query": "let iocs = externaldata(DateAdded:string,IoC:string,Type:string,TLP:string) [@\"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Feeds/SOURGUM.csv\"] with (format=\"csv\", ignoreFirstRecord=True);\nlet file_path1 = (iocs | where Type =~ \"filepath1\" | project IoC);\nlet file_path2 = (iocs | where Type =~ \"filepath2\" | project IoC);\nlet file_path3 = (iocs | where Type =~ \"filepath3\" | project IoC);\nlet reg_key = (iocs | where Type =~ \"regkey\" | project IoC);\nWindowsEvent\n| where EventID == 4688 and (EventData has_any (file_path1) or EventData has_any (file_path2) or EventData has_any (file_path3) or EventData has_any ('reg add') or EventData has_any (reg_key) )\n| extend CommandLine = tostring(EventData.CommandLine)\n| extend NewProcessName = tostring(EventData.NewProcessName)\n| extend ParentProcessName = tostring(EventData.ParentProcessName)\n| where (CommandLine has_any (file_path1)) or\n (CommandLine has_any (file_path3)) or\n (CommandLine has 'reg add' and CommandLine has_any (reg_key) and CommandLine has_any (file_path2)) or \n (NewProcessName has_any (file_path1)) or\n (NewProcessName has_any (file_path3)) or\n (ParentProcessName has_any (file_path1)) or \n (ParentProcessName has_any (file_path3)) \n| extend Account = strcat(EventData.SubjectDomainName,\"\\\\\", EventData.SubjectUserName)\n| extend NewProcessId = tostring(EventData.NewProcessId)\n| extend IP = tostring(EventData.IpAddress)\n| project TimeGenerated, Computer, NewProcessName, ParentProcessName, Account, NewProcessId, Type, IP\n| extend Alert = 'SOURGUM IOC detected'\n| extend AccountName = tostring(split(Account, @'\\')[1]), AccountNTDomain = tostring(split(Account, @'\\')[0])\n| extend HostName = tostring(split(Computer, \".\")[0]), DomainIndex = toint(indexof(Computer, '.'))\n| extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)\n",
"queryFrequency": "PT6H",
"queryPeriod": "PT6H",
"severity": "High",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Persistence"
],
"tags": [
"Caramel Tsunami"
],
"techniques": [
"T1546"
],
"templateVersion": "1.0.4",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}