Known Forest Blizzard group domains - July 2019

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Id	074ce265-f684-41cd-af07-613c5f3e6d0d
Rulename	Known Forest Blizzard group domains - July 2019
Description	Matches domain name IOCs related to Forest Blizzard group activity published July 2019 with CommonSecurityLog, DnsEvents and VMConnection dataTypes. References: https://blogs.microsoft.com/on-the-issues/2019/07/17/new-cyberthreats-require-new-ways-to-protect-democracy/.
Severity	High
Tactics	CommandAndControl
Techniques	T1071
Required data connectors	AzureFirewall AzureMonitor(VMInsights) CiscoASA CiscoUmbrellaDataConnector Corelight DNS GCPDNSDataConnector InfobloxNIOS NXLogDnsLogs PaloAltoNetworks Zscaler
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/ForestBlizzardJuly2019IOCs.yaml
Version	1.6.1
Arm template	074ce265-f684-41cd-af07-613c5f3e6d0d.json

KQL

let DomainNames = dynamic(["irf.services","microsoft-onthehub.com","msofficelab.com","com-mailbox.com","my-sharefile.com","my-sharepoints.com",
"accounts-web-mail.com","customer-certificate.com","session-users-activities.com","user-profile-credentials.com","verify-linke.com","support-servics.net",
"onedrive-sharedfile.com","onedrv-live.com","transparencyinternational-my-sharepoint.com","transparencyinternational-my-sharepoints.com","soros-my-sharepoint.com"]);
(union isfuzzy=true
  (CommonSecurityLog
  | where Message has_any (DomainNames)
  | parse Message with * '(' DNSName ')' *
  | extend AccountName = SourceUserID, DeviceName, IPAddress = SourceIP
  ),
  (_Im_Dns(domain_has_any=DomainNames)
  | where DnsQuery has_any (DomainNames)
  | extend IPAddress = SrcIpAddr, DeviceName = Dvc
  ),
  (VMConnection
  | where RemoteDnsCanonicalNames has_any (DomainNames)
  | parse RemoteDnsCanonicalNames with * '["' DNSName '"]' *
  | extend IPAddress = RemoteIp, DeviceName = Computer
  ),
  (AzureDiagnostics 
  | where ResourceType == "AZUREFIREWALLS"
  | where Category == "AzureFirewallApplicationRule"
  | parse msg_s with Protocol 'request from ' SourceHost ':' SourcePort 'to ' DestinationHost ':' DestinationPort '. Action:' Action
  | where DestinationHost has_any (DomainNames)
  | extend DNSName = DestinationHost 
  | extend IPAddress = SourceHost
  ),
  (AzureDiagnostics
  | where ResourceType == "AZUREFIREWALLS"
  | where Category == "AzureFirewallDnsProxy"
  | project TimeGenerated,Resource, msg_s, Type
  | parse msg_s with "DNS Request: " ClientIP ":" ClientPort " - " QueryID " " Request_Type " " Request_Class " " Request_Name ". " Request_Protocol " " Request_Size " " EDNSO_DO " " EDNS0_Buffersize " " Responce_Code " " Responce_Flags " " Responce_Size " " Response_Duration
  | where Request_Name  has_any (DomainNames)
  | extend DNSName = Request_Name
  | extend IPAddress = ClientIP
  ),
  (AZFWApplicationRule
  | where isnotempty(Fqdn)
  | where Fqdn has_any (DomainNames)  
  | extend DNSName = Fqdn 
  | extend IPAddress = SourceIp
  ),
  (AZFWDnsQuery
  | where isnotempty(QueryName)
  | where QueryName has_any (DomainNames)
  | extend DNSName = QueryName
  | extend IPAddress = SourceIp
  ),
  (
    _Im_WebSession(url_has_any=DomainNames)
    | extend IPAddress=IpAddr, DeviceName=Hostname, AccountName = tostring(split(User, "@")[0]), AccountDomain = tostring(split(User, "@")[1])
  )
)
| where DNSName has_any (DomainNames)
| extend timestamp = TimeGenerated
| extend HostName = tostring(split(DeviceName, ".")[0]), DomainIndex = toint(indexof(DeviceName, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(DeviceName, DomainIndex + 1), DeviceName)

YAML

relevantTechniques:
- T1071
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/MultipleDataSources/ForestBlizzardJuly2019IOCs.yaml
metadata:
  categories:
    domains:
    - Security - 0-day Vulnerability
  source:
    kind: Community
  author:
    name: Microsoft Security Research
  support:
    tier: Community
triggerOperator: gt
kind: Scheduled
entityMappings:
- fieldMappings:
  - columnName: User
    identifier: FullName
  - columnName: AccountName
    identifier: Name
  - columnName: AccountDomain
    identifier: NTDomain
  entityType: Account
- fieldMappings:
  - columnName: DeviceName
    identifier: FullName
  - columnName: HostName
    identifier: HostName
  - columnName: HostNameDomain
    identifier: NTDomain
  entityType: Host
- fieldMappings:
  - columnName: IPAddress
    identifier: Address
  entityType: IP
requiredDataConnectors:
- dataTypes:
  - DnsEvents
  connectorId: DNS
- dataTypes:
  - VMConnection
  connectorId: AzureMonitor(VMInsights)
- dataTypes:
  - CommonSecurityLog
  connectorId: CiscoASA
- dataTypes:
  - CommonSecurityLog
  connectorId: PaloAltoNetworks
- dataTypes:
  - AzureDiagnostics
  - AZFWApplicationRule
  - AZFWDnsQuery
  connectorId: AzureFirewall
- dataTypes:
  - CommonSecurityLog
  connectorId: Zscaler
- dataTypes:
  - Syslog
  connectorId: InfobloxNIOS
- dataTypes:
  - GCP_DNS_CL
  connectorId: GCPDNSDataConnector
- dataTypes:
  - NXLog_DNS_Server_CL
  connectorId: NXLogDnsLogs
- dataTypes:
  - Cisco_Umbrella_dns_CL
  connectorId: CiscoUmbrellaDataConnector
- dataTypes:
  - Corelight_CL
  connectorId: Corelight
queryPeriod: 1d
query: |
  let DomainNames = dynamic(["irf.services","microsoft-onthehub.com","msofficelab.com","com-mailbox.com","my-sharefile.com","my-sharepoints.com",
  "accounts-web-mail.com","customer-certificate.com","session-users-activities.com","user-profile-credentials.com","verify-linke.com","support-servics.net",
  "onedrive-sharedfile.com","onedrv-live.com","transparencyinternational-my-sharepoint.com","transparencyinternational-my-sharepoints.com","soros-my-sharepoint.com"]);
  (union isfuzzy=true
    (CommonSecurityLog
    | where Message has_any (DomainNames)
    | parse Message with * '(' DNSName ')' *
    | extend AccountName = SourceUserID, DeviceName, IPAddress = SourceIP
    ),
    (_Im_Dns(domain_has_any=DomainNames)
    | where DnsQuery has_any (DomainNames)
    | extend IPAddress = SrcIpAddr, DeviceName = Dvc
    ),
    (VMConnection
    | where RemoteDnsCanonicalNames has_any (DomainNames)
    | parse RemoteDnsCanonicalNames with * '["' DNSName '"]' *
    | extend IPAddress = RemoteIp, DeviceName = Computer
    ),
    (AzureDiagnostics 
    | where ResourceType == "AZUREFIREWALLS"
    | where Category == "AzureFirewallApplicationRule"
    | parse msg_s with Protocol 'request from ' SourceHost ':' SourcePort 'to ' DestinationHost ':' DestinationPort '. Action:' Action
    | where DestinationHost has_any (DomainNames)
    | extend DNSName = DestinationHost 
    | extend IPAddress = SourceHost
    ),
    (AzureDiagnostics
    | where ResourceType == "AZUREFIREWALLS"
    | where Category == "AzureFirewallDnsProxy"
    | project TimeGenerated,Resource, msg_s, Type
    | parse msg_s with "DNS Request: " ClientIP ":" ClientPort " - " QueryID " " Request_Type " " Request_Class " " Request_Name ". " Request_Protocol " " Request_Size " " EDNSO_DO " " EDNS0_Buffersize " " Responce_Code " " Responce_Flags " " Responce_Size " " Response_Duration
    | where Request_Name  has_any (DomainNames)
    | extend DNSName = Request_Name
    | extend IPAddress = ClientIP
    ),
    (AZFWApplicationRule
    | where isnotempty(Fqdn)
    | where Fqdn has_any (DomainNames)  
    | extend DNSName = Fqdn 
    | extend IPAddress = SourceIp
    ),
    (AZFWDnsQuery
    | where isnotempty(QueryName)
    | where QueryName has_any (DomainNames)
    | extend DNSName = QueryName
    | extend IPAddress = SourceIp
    ),
    (
      _Im_WebSession(url_has_any=DomainNames)
      | extend IPAddress=IpAddr, DeviceName=Hostname, AccountName = tostring(split(User, "@")[0]), AccountDomain = tostring(split(User, "@")[1])
    )
  )
  | where DNSName has_any (DomainNames)
  | extend timestamp = TimeGenerated
  | extend HostName = tostring(split(DeviceName, ".")[0]), DomainIndex = toint(indexof(DeviceName, '.'))
  | extend HostNameDomain = iff(DomainIndex != -1, substring(DeviceName, DomainIndex + 1), DeviceName)  
description: |
  'Matches domain name IOCs related to Forest Blizzard group activity published July 2019 with CommonSecurityLog, DnsEvents and VMConnection dataTypes.
  References: https://blogs.microsoft.com/on-the-issues/2019/07/17/new-cyberthreats-require-new-ways-to-protect-democracy/.'  
tactics:
- CommandAndControl
severity: High
name: Known Forest Blizzard group domains - July 2019
tags:
- SchemaVersion: 0.1.1
  Schema: ASIMDns
queryFrequency: 1d
triggerThreshold: 0
version: 1.6.1
id: 074ce265-f684-41cd-af07-613c5f3e6d0d

ARM

{
  "$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/074ce265-f684-41cd-af07-613c5f3e6d0d')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/074ce265-f684-41cd-af07-613c5f3e6d0d')]",
      "properties": {
        "alertRuleTemplateName": "074ce265-f684-41cd-af07-613c5f3e6d0d",
        "customDetails": null,
        "description": "'Matches domain name IOCs related to Forest Blizzard group activity published July 2019 with CommonSecurityLog, DnsEvents and VMConnection dataTypes.\nReferences: https://blogs.microsoft.com/on-the-issues/2019/07/17/new-cyberthreats-require-new-ways-to-protect-democracy/.'\n",
        "displayName": "Known Forest Blizzard group domains - July 2019",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "User",
                "identifier": "FullName"
              },
              {
                "columnName": "AccountName",
                "identifier": "Name"
              },
              {
                "columnName": "AccountDomain",
                "identifier": "NTDomain"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "DeviceName",
                "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/ForestBlizzardJuly2019IOCs.yaml",
        "query": "let DomainNames = dynamic([\"irf.services\",\"microsoft-onthehub.com\",\"msofficelab.com\",\"com-mailbox.com\",\"my-sharefile.com\",\"my-sharepoints.com\",\n\"accounts-web-mail.com\",\"customer-certificate.com\",\"session-users-activities.com\",\"user-profile-credentials.com\",\"verify-linke.com\",\"support-servics.net\",\n\"onedrive-sharedfile.com\",\"onedrv-live.com\",\"transparencyinternational-my-sharepoint.com\",\"transparencyinternational-my-sharepoints.com\",\"soros-my-sharepoint.com\"]);\n(union isfuzzy=true\n  (CommonSecurityLog\n  | where Message has_any (DomainNames)\n  | parse Message with * '(' DNSName ')' *\n  | extend AccountName = SourceUserID, DeviceName, IPAddress = SourceIP\n  ),\n  (_Im_Dns(domain_has_any=DomainNames)\n  | where DnsQuery has_any (DomainNames)\n  | extend IPAddress = SrcIpAddr, DeviceName = Dvc\n  ),\n  (VMConnection\n  | where RemoteDnsCanonicalNames has_any (DomainNames)\n  | parse RemoteDnsCanonicalNames with * '[\"' DNSName '\"]' *\n  | extend IPAddress = RemoteIp, DeviceName = Computer\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 DestinationHost has_any (DomainNames)\n  | extend DNSName = DestinationHost \n  | extend IPAddress = SourceHost\n  ),\n  (AzureDiagnostics\n  | where ResourceType == \"AZUREFIREWALLS\"\n  | where Category == \"AzureFirewallDnsProxy\"\n  | project TimeGenerated,Resource, msg_s, Type\n  | parse msg_s with \"DNS Request: \" ClientIP \":\" ClientPort \" - \" QueryID \" \" Request_Type \" \" Request_Class \" \" Request_Name \". \" Request_Protocol \" \" Request_Size \" \" EDNSO_DO \" \" EDNS0_Buffersize \" \" Responce_Code \" \" Responce_Flags \" \" Responce_Size \" \" Response_Duration\n  | where Request_Name  has_any (DomainNames)\n  | extend DNSName = Request_Name\n  | extend IPAddress = ClientIP\n  ),\n  (AZFWApplicationRule\n  | where isnotempty(Fqdn)\n  | where Fqdn has_any (DomainNames)  \n  | extend DNSName = Fqdn \n  | extend IPAddress = SourceIp\n  ),\n  (AZFWDnsQuery\n  | where isnotempty(QueryName)\n  | where QueryName has_any (DomainNames)\n  | extend DNSName = QueryName\n  | extend IPAddress = SourceIp\n  ),\n  (\n    _Im_WebSession(url_has_any=DomainNames)\n    | extend IPAddress=IpAddr, DeviceName=Hostname, AccountName = tostring(split(User, \"@\")[0]), AccountDomain = tostring(split(User, \"@\")[1])\n  )\n)\n| where DNSName has_any (DomainNames)\n| extend timestamp = TimeGenerated\n| extend HostName = tostring(split(DeviceName, \".\")[0]), DomainIndex = toint(indexof(DeviceName, '.'))\n| extend HostNameDomain = iff(DomainIndex != -1, substring(DeviceName, DomainIndex + 1), DeviceName)\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P1D",
        "severity": "High",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl"
        ],
        "tags": [
          {
            "Schema": "ASIMDns",
            "SchemaVersion": "0.1.1"
          }
        ],
        "techniques": [
          "T1071"
        ],
        "templateVersion": "1.6.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}