AV detections related to Dev-0530 actors

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Id	5f171045-88ab-4634-baae-a7b6509f483b
Rulename	AV detections related to Dev-0530 actors
Description	This query looks for Microsoft Defender AV detections related to Dev-0530 actors. In Microsoft Sentinel the SecurityAlerts table includes only the Device Name of the affected device, this query joins the DeviceInfo table to clearly connect other information such as Device group, ip, logged on users etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.
Severity	High
Tactics	Impact
Techniques	T1486
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/Detections/SecurityAlert/Dev-0530AVHits.yaml
Version	1.0.5
Arm template	5f171045-88ab-4634-baae-a7b6509f483b.json

KQL

let Dev0530_threats = dynamic(["Trojan:Win32/SiennaPurple.A", "Ransom:Win32/SiennaBlue.A", "Ransom:Win32/SiennaBlue.B"]);
SecurityAlert
| where ProviderName == "MDATP"
| extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)
| extend ThreatFamilyName = tostring(parse_json(ExtendedProperties).ThreatFamilyName)
| where ThreatName in~ (Dev0530_threats) or ThreatFamilyName in~ (Dev0530_threats)
| extend CompromisedEntity = tolower(CompromisedEntity)
| join kind=inner (DeviceInfo
    | extend DeviceName = tolower(DeviceName)
) on $left.CompromisedEntity == $right.DeviceName
| summarize by bin(TimeGenerated, 1d), DisplayName, ThreatName, ThreatFamilyName, PublicIP, AlertSeverity, Description, tostring(LoggedOnUsers), DeviceId, TenantId, CompromisedEntity, tostring(LoggedOnUsers), ProductName, Entities
| extend HostName = tostring(split(CompromisedEntity, ".")[0]), DomainIndex = toint(indexof(CompromisedEntity, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)
| project-away DomainIndex

YAML

queryPeriod: 1d
requiredDataConnectors:
- dataTypes:
  - SecurityAlert
  connectorId: MicrosoftThreatProtection
name: AV detections related to Dev-0530 actors
metadata:
  support:
    tier: Community
  author:
    name: Microsoft Security Research
  source:
    kind: Community
  categories:
    domains:
    - Security - Others
relevantTechniques:
- T1486
severity: High
description: |
  'This query looks for Microsoft Defender AV detections related to  Dev-0530 actors.
  In Microsoft Sentinel the SecurityAlerts table includes only the Device Name of the affected device, this query joins the DeviceInfo table to clearly connect other information such as Device group, ip, logged on users etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.'  
triggerThreshold: 0
tags:
- Dev-0530 actors
query: |
  let Dev0530_threats = dynamic(["Trojan:Win32/SiennaPurple.A", "Ransom:Win32/SiennaBlue.A", "Ransom:Win32/SiennaBlue.B"]);
  SecurityAlert
  | where ProviderName == "MDATP"
  | extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)
  | extend ThreatFamilyName = tostring(parse_json(ExtendedProperties).ThreatFamilyName)
  | where ThreatName in~ (Dev0530_threats) or ThreatFamilyName in~ (Dev0530_threats)
  | extend CompromisedEntity = tolower(CompromisedEntity)
  | join kind=inner (DeviceInfo
      | extend DeviceName = tolower(DeviceName)
  ) on $left.CompromisedEntity == $right.DeviceName
  | summarize by bin(TimeGenerated, 1d), DisplayName, ThreatName, ThreatFamilyName, PublicIP, AlertSeverity, Description, tostring(LoggedOnUsers), DeviceId, TenantId, CompromisedEntity, tostring(LoggedOnUsers), ProductName, Entities
  | extend HostName = tostring(split(CompromisedEntity, ".")[0]), DomainIndex = toint(indexof(CompromisedEntity, '.'))
  | extend HostNameDomain = iff(DomainIndex != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)
  | project-away DomainIndex  
tactics:
- Impact
queryFrequency: 1d
entityMappings:
- entityType: Host
  fieldMappings:
  - identifier: FullName
    columnName: CompromisedEntity
  - identifier: HostName
    columnName: HostName
  - identifier: DnsDomain
    columnName: HostNameDomain
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: PublicIP
triggerOperator: gt
version: 1.0.5
id: 5f171045-88ab-4634-baae-a7b6509f483b
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/SecurityAlert/Dev-0530AVHits.yaml
kind: Scheduled

ARM