Known Forest Blizzard group domains - July 2019

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)

tags:
- Schema: ASIMDns
  SchemaVersion: 0.1.1
id: 074ce265-f684-41cd-af07-613c5f3e6d0d
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/.'  
triggerThreshold: 0
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
version: 1.6.1
triggerOperator: gt
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)  
tactics:
- CommandAndControl
kind: Scheduled
queryFrequency: 1d
name: Known Forest Blizzard group domains - July 2019
severity: High
metadata:
  author:
    name: Microsoft Security Research
  source:
    kind: Community
  categories:
    domains:
    - Security - 0-day Vulnerability
  support:
    tier: Community
queryPeriod: 1d
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
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/MultipleDataSources/ForestBlizzardJuly2019IOCs.yaml
relevantTechniques:
- T1071