Star Blizzard C2 Domains August 2022 | Microsoft Sentinel Analytic Rules

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Id	2149d9bb-8298-444c-8f99-f7bf0274dd05
Rulename	Star Blizzard C2 Domains August 2022
Description	Identifies a match across various data feeds for domains related to an actor tracked by Microsoft as Star Blizzard.
Severity	High
Tactics	InitialAccess
Techniques	T1566
Required data connectors	AzureFirewall AzureMonitor(VMInsights) CiscoASA MicrosoftThreatProtection PaloAltoNetworks
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/MultipleDataSources/StarBlizzardDomainsAugust2022.yaml
Version	1.0.5
Arm template	2149d9bb-8298-444c-8f99-f7bf0274dd05.json

KQL

let iocs = externaldata(DateAdded:string,IoC:string,Type:string) [@"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Feeds/SEABORGIUMIOC.csv"] with (format="csv", ignoreFirstRecord=True);
let DomainNames = (iocs | where Type =~ "domainname"| project IoC);
(union isfuzzy=true
(CommonSecurityLog
| parse Message with * '(' DNSName ')' *
| where DNSName in~ (DomainNames)
| extend Account = SourceUserID, Computer = DeviceName, IPAddress =  DestinationIP
),
(_Im_Dns (domain_has_any=DomainNames)
| extend DNSName = DnsQuery
| extend IPAddress =  SrcIpAddr, Computer = Dvc
),
(_Im_WebSession (url_has_any=DomainNames)
| extend DNSName = tostring(parse_url(Url)["Host"])
| extend IPAddress =  SrcIpAddr, Computer = Dvc
),
(VMConnection
| parse RemoteDnsCanonicalNames with * '["' DNSName '"]' *
| where DNSName  in~ (DomainNames)
| extend IPAddress = RemoteIp
),
(DeviceNetworkEvents
| where RemoteUrl  has_any (DomainNames)
| extend IPAddress = RemoteIP
| extend Computer = DeviceName
),
(EmailUrlInfo
| where Url has_any (DomainNames)
| join (EmailEvents
| where EmailDirection == "Inbound" ) on NetworkMessageId
| extend IPAddress = SenderIPv4
| extend Account = RecipientEmailAddress
),
(AzureDiagnostics
| where ResourceType == "AZUREFIREWALLS"
| where Category == "AzureFirewallApplicationRule"
| parse msg_s with Protocol 'request from ' SourceHost ':' SourcePort 'to ' DestinationHost ':' DestinationPort '. Action:' Action
| where isnotempty(DestinationHost)
| where DestinationHost has_any (DomainNames)
| extend DNSName = DestinationHost
| extend IPAddress = SourceHost
)
)
| extend AccountName = tostring(split(Account, "@")[0]), AccountUPNSuffix = tostring(split(Account, "@")[1])
| 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, "@")[0]), AccountUPNSuffix = tostring(split(Account, "@")[1])
| extend HostName = tostring(split(Computer, ".")[0]), DomainIndex = toint(indexof(Computer, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)

YAML

description: |
  'Identifies a match across various data feeds for domains related to an actor tracked by Microsoft as Star Blizzard.'
tags:
- Star Blizzard
- Schema: ASIMDns
  SchemaVersion: 0.1.1
tactics:
- InitialAccess
queryPeriod: 1d
id: 2149d9bb-8298-444c-8f99-f7bf0274dd05
name: Star Blizzard C2 Domains August 2022
version: 1.0.5
severity: High
query: |
  let iocs = externaldata(DateAdded:string,IoC:string,Type:string) [@"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Feeds/SEABORGIUMIOC.csv"] with (format="csv", ignoreFirstRecord=True);
  let DomainNames = (iocs | where Type =~ "domainname"| project IoC);
  (union isfuzzy=true
  (CommonSecurityLog
  | parse Message with * '(' DNSName ')' *
  | where DNSName in~ (DomainNames)
  | extend Account = SourceUserID, Computer = DeviceName, IPAddress =  DestinationIP
  ),
  (_Im_Dns (domain_has_any=DomainNames)
  | extend DNSName = DnsQuery
  | extend IPAddress =  SrcIpAddr, Computer = Dvc
  ),
  (_Im_WebSession (url_has_any=DomainNames)
  | extend DNSName = tostring(parse_url(Url)["Host"])
  | extend IPAddress =  SrcIpAddr, Computer = Dvc
  ),
  (VMConnection
  | parse RemoteDnsCanonicalNames with * '["' DNSName '"]' *
  | where DNSName  in~ (DomainNames)
  | extend IPAddress = RemoteIp
  ),
  (DeviceNetworkEvents
  | where RemoteUrl  has_any (DomainNames)
  | extend IPAddress = RemoteIP
  | extend Computer = DeviceName
  ),
  (EmailUrlInfo
  | where Url has_any (DomainNames)
  | join (EmailEvents
  | where EmailDirection == "Inbound" ) on NetworkMessageId
  | extend IPAddress = SenderIPv4
  | extend Account = RecipientEmailAddress
  ),
  (AzureDiagnostics
  | where ResourceType == "AZUREFIREWALLS"
  | where Category == "AzureFirewallApplicationRule"
  | parse msg_s with Protocol 'request from ' SourceHost ':' SourcePort 'to ' DestinationHost ':' DestinationPort '. Action:' Action
  | where isnotempty(DestinationHost)
  | where DestinationHost has_any (DomainNames)
  | extend DNSName = DestinationHost
  | extend IPAddress = SourceHost
  )
  )
  | extend AccountName = tostring(split(Account, "@")[0]), AccountUPNSuffix = tostring(split(Account, "@")[1])
  | 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, "@")[0]), AccountUPNSuffix = tostring(split(Account, "@")[1])
  | extend HostName = tostring(split(Computer, ".")[0]), DomainIndex = toint(indexof(Computer, '.'))
  | extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)
queryFrequency: 1d
kind: Scheduled
metadata:
  author:
    name: Microsoft Security Research
  support:
    tier: Community
  source:
    kind: Community
  categories:
    domains:
    - Security - Threat Intelligence
triggerOperator: gt
triggerThreshold: 0
relevantTechniques:
- T1566
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: Account
    identifier: FullName
  - columnName: AccountName
    identifier: Name
  - columnName: AccountUPNSuffix
    identifier: UPNSuffix
- entityType: Host
  fieldMappings:
  - columnName: Computer
    identifier: FullName
  - columnName: HostName
    identifier: HostName
  - columnName: HostNameDomain
    identifier: NTDomain
- entityType: IP
  fieldMappings:
  - columnName: IPAddress
    identifier: Address
requiredDataConnectors:
- connectorId: AzureMonitor(VMInsights)
  dataTypes:
  - VMConnection
- connectorId: CiscoASA
  dataTypes:
  - CommonSecurityLog
- connectorId: PaloAltoNetworks
  dataTypes:
  - CommonSecurityLog
- connectorId: MicrosoftThreatProtection
  dataTypes:
  - DeviceNetworkEvents
  - EmailUrlInfo
  - EmailEvents
- connectorId: AzureFirewall
  dataTypes:
  - AzureDiagnostics
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/MultipleDataSources/StarBlizzardDomainsAugust2022.yaml

ARM

{
  "$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/2149d9bb-8298-444c-8f99-f7bf0274dd05')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/2149d9bb-8298-444c-8f99-f7bf0274dd05')]",
      "properties": {
        "alertRuleTemplateName": "2149d9bb-8298-444c-8f99-f7bf0274dd05",
        "customDetails": null,
        "description": "'Identifies a match across various data feeds for domains related to an actor tracked by Microsoft as Star Blizzard.'\n",
        "displayName": "Star Blizzard C2 Domains August 2022",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "Account",
                "identifier": "FullName"
              },
              {
                "columnName": "AccountName",
                "identifier": "Name"
              },
              {
                "columnName": "AccountUPNSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "Computer",
                "identifier": "FullName"
              },
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "HostNameDomain",
                "identifier": "NTDomain"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPAddress",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/MultipleDataSources/StarBlizzardDomainsAugust2022.yaml",
        "query": "let iocs = externaldata(DateAdded:string,IoC:string,Type:string) [@\"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Feeds/SEABORGIUMIOC.csv\"] with (format=\"csv\", ignoreFirstRecord=True);\nlet DomainNames = (iocs | where Type =~ \"domainname\"| project IoC);\n(union isfuzzy=true\n(CommonSecurityLog\n| parse Message with * '(' DNSName ')' *\n| where DNSName in~ (DomainNames)\n| extend Account = SourceUserID, Computer = DeviceName, IPAddress =  DestinationIP\n),\n(_Im_Dns (domain_has_any=DomainNames)\n| extend DNSName = DnsQuery\n| extend IPAddress =  SrcIpAddr, Computer = Dvc\n),\n(_Im_WebSession (url_has_any=DomainNames)\n| extend DNSName = tostring(parse_url(Url)[\"Host\"])\n| extend IPAddress =  SrcIpAddr, Computer = Dvc\n),\n(VMConnection\n| parse RemoteDnsCanonicalNames with * '[\"' DNSName '\"]' *\n| where DNSName  in~ (DomainNames)\n| extend IPAddress = RemoteIp\n),\n(DeviceNetworkEvents\n| where RemoteUrl  has_any (DomainNames)\n| extend IPAddress = RemoteIP\n| extend Computer = DeviceName\n),\n(EmailUrlInfo\n| where Url has_any (DomainNames)\n| join (EmailEvents\n| where EmailDirection == \"Inbound\" ) on NetworkMessageId\n| extend IPAddress = SenderIPv4\n| extend Account = RecipientEmailAddress\n),\n(AzureDiagnostics\n| where ResourceType == \"AZUREFIREWALLS\"\n| where Category == \"AzureFirewallApplicationRule\"\n| parse msg_s with Protocol 'request from ' SourceHost ':' SourcePort 'to ' DestinationHost ':' DestinationPort '. Action:' Action\n| where isnotempty(DestinationHost)\n| where DestinationHost has_any (DomainNames)\n| extend DNSName = DestinationHost\n| extend IPAddress = SourceHost\n)\n)\n| extend AccountName = tostring(split(Account, \"@\")[0]), AccountUPNSuffix = tostring(split(Account, \"@\")[1])\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, \"@\")[0]), AccountUPNSuffix = tostring(split(Account, \"@\")[1])\n| extend HostName = tostring(split(Computer, \".\")[0]), DomainIndex = toint(indexof(Computer, '.'))\n| extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P1D",
        "severity": "High",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "tags": [
          "Star Blizzard",
          {
            "Schema": "ASIMDns",
            "SchemaVersion": "0.1.1"
          }
        ],
        "techniques": [
          "T1566"
        ],
        "templateVersion": "1.0.5",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}