SUNBURST network beacons

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Id	ce1e7025-866c-41f3-9b08-ec170e05e73e
Rulename	SUNBURST network beacons
Description	Identifies SolarWinds SUNBURST domain beacon IOCs in DeviceNetworkEvents References: - https://www.fireeye.com/blog/threat-research/2020/12/evasive-attacker-leverages-solarwinds-supply-chain-compromises-with-sunburst-backdoor.html - https://gist.github.com/olafhartong/71ffdd4cab4b6acd5cbcd1a0691ff82f
Severity	Medium
Tactics	Execution Persistence InitialAccess
Techniques	T1195 T1059 T1546
Required data connectors	MicrosoftThreatProtection
Kind	Scheduled
Query frequency	1d
Query period	1d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Defender XDR/Analytic Rules/SolarWinds_SUNBURST_Network-IOCs.yaml
Version	1.0.5
Arm template	ce1e7025-866c-41f3-9b08-ec170e05e73e.json

KQL

let SunburstURL=dynamic(["panhardware.com","databasegalore.com","avsvmcloud.com","freescanonline.com","thedoccloud.com","deftsecurity.com"]);
DeviceNetworkEvents
| where ActionType == "ConnectionSuccess"
| where RemoteUrl in(SunburstURL)
| extend HashAlgorithm = 'MD5'
| extend HostName = tostring(split(DeviceName, ".")[0]), DomainIndex = toint(indexof(DeviceName, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(DeviceName, DomainIndex + 1), DeviceName)

YAML

id: ce1e7025-866c-41f3-9b08-ec170e05e73e
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Defender XDR/Analytic Rules/SolarWinds_SUNBURST_Network-IOCs.yaml
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: DeviceName
  - identifier: HostName
    columnName: HostName
  - identifier: DnsDomain
    columnName: HostNameDomain
  entityType: Host
- fieldMappings:
  - identifier: FullName
    columnName: InitiatingProcessAccountUpn
  - identifier: Name
    columnName: InitiatingProcessAccountName
  - identifier: UPNSuffix
    columnName: InitiatingProcessAccountDomain
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: RemoteIP
  entityType: IP
- fieldMappings:
  - identifier: Url
    columnName: RemoteUrl
  entityType: URL
- fieldMappings:
  - identifier: Algorithm
    columnName: HashAlgorithm
  - identifier: Value
    columnName: InitiatingProcessMD5
  entityType: FileHash
requiredDataConnectors:
- dataTypes:
  - DeviceNetworkEvents
  connectorId: MicrosoftThreatProtection
queryFrequency: 1d
queryPeriod: 1d
status: Available
query: |
  let SunburstURL=dynamic(["panhardware.com","databasegalore.com","avsvmcloud.com","freescanonline.com","thedoccloud.com","deftsecurity.com"]);
  DeviceNetworkEvents
  | where ActionType == "ConnectionSuccess"
  | where RemoteUrl in(SunburstURL)
  | extend HashAlgorithm = 'MD5'
  | extend HostName = tostring(split(DeviceName, ".")[0]), DomainIndex = toint(indexof(DeviceName, '.'))
  | extend HostNameDomain = iff(DomainIndex != -1, substring(DeviceName, DomainIndex + 1), DeviceName)  
name: SUNBURST network beacons
kind: Scheduled
tactics:
- Execution
- Persistence
- InitialAccess
severity: Medium
relevantTechniques:
- T1195
- T1059
- T1546
triggerThreshold: 0
version: 1.0.5
description: |
  Identifies SolarWinds SUNBURST domain beacon IOCs in DeviceNetworkEvents
  References:
  - https://www.fireeye.com/blog/threat-research/2020/12/evasive-attacker-leverages-solarwinds-supply-chain-compromises-with-sunburst-backdoor.html
  - https://gist.github.com/olafhartong/71ffdd4cab4b6acd5cbcd1a0691ff82f

ARM