Star Blizzard C2 Domains August 2022

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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

OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/MultipleDataSources/StarBlizzardDomainsAugust2022.yaml
metadata:
  categories:
    domains:
    - Security - Threat Intelligence
  author:
    name: Microsoft Security Research
  source:
    kind: Community
  support:
    tier: Community
id: 2149d9bb-8298-444c-8f99-f7bf0274dd05
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)  
tags:
- Star Blizzard
- SchemaVersion: 0.1.1
  Schema: ASIMDns
description: |
    'Identifies a match across various data feeds for domains related to an actor tracked by Microsoft as Star Blizzard.'
name: Star Blizzard C2 Domains August 2022
relevantTechniques:
- T1566
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: FullName
    columnName: Account
  - identifier: Name
    columnName: AccountName
  - identifier: UPNSuffix
    columnName: AccountUPNSuffix
- entityType: Host
  fieldMappings:
  - identifier: FullName
    columnName: Computer
  - identifier: HostName
    columnName: HostName
  - identifier: NTDomain
    columnName: HostNameDomain
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: IPAddress
triggerThreshold: 0
severity: High
requiredDataConnectors:
- dataTypes:
  - VMConnection
  connectorId: AzureMonitor(VMInsights)
- dataTypes:
  - CommonSecurityLog
  connectorId: CiscoASA
- dataTypes:
  - CommonSecurityLog
  connectorId: PaloAltoNetworks
- dataTypes:
  - DeviceNetworkEvents
  - EmailUrlInfo
  - EmailEvents
  connectorId: MicrosoftThreatProtection
- dataTypes:
  - AzureDiagnostics
  connectorId: AzureFirewall
queryFrequency: 1d
queryPeriod: 1d
version: 1.0.5
kind: Scheduled
tactics:
- InitialAccess
triggerOperator: gt

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"
    }
  ]
}