AV detections related to Europium actors

Back


Id	186970ee-5001-41c1-8c73-3178f75ce96a
Rulename	AV detections related to Europium actors
Description	This query looks for Microsoft Defender AV detections related to Europium actor. 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, etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available. Reference: https://www.microsoft.com/security/blog/2022/09/08/microsoft-investigates-iranian-attacks-against-the-albanian-government
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/EuropiumAVHits.yaml
Version	1.1.2
Arm template	186970ee-5001-41c1-8c73-3178f75ce96a.json

KQL

let Europium_threats = dynamic(["TrojanDropper:ASP/WebShell!MSR", "Trojan:Win32/BatRunGoXml", "DoS:Win64/WprJooblash", "Ransom:Win32/Eagle!MSR", "Trojan:Win32/Debitom.A"]);
DeviceInfo
| extend DeviceName = tolower(DeviceName)
| join kind=inner ( SecurityAlert
| where ProviderName == "MDATP"
| extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)
| extend ThreatFamilyName = tostring(parse_json(ExtendedProperties).ThreatFamilyName)
| where ThreatName in~ (Europium_threats) or ThreatFamilyName in~ (Europium_threats)
| extend CompromisedEntity = tolower(CompromisedEntity)
) on $left.DeviceName == $right.CompromisedEntity
| summarize by DisplayName, ThreatName, ThreatFamilyName, PublicIP, AlertSeverity, Description, tostring(LoggedOnUsers), DeviceId, TenantId, bin(TimeGenerated, 1d), CompromisedEntity, tostring(LoggedOnUsers), ProductName, Entities
| extend HostName = tostring(split(CompromisedEntity, ".")[0]), DomainIndex = toint(indexof(CompromisedEntity, '.'))
| extend HostNameDomain = iff(CompromisedEntity != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)

YAML

description: |
  'This query looks for Microsoft Defender AV detections related to  Europium actor. 
  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, etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.
   Reference: https://www.microsoft.com/security/blog/2022/09/08/microsoft-investigates-iranian-attacks-against-the-albanian-government '  
kind: Scheduled
queryFrequency: 1d
metadata:
  categories:
    domains:
    - Security - Threat Intelligence
  author:
    name: Microsoft Security Research
  support:
    tier: Community
  source:
    kind: Community
triggerOperator: gt
severity: High
relevantTechniques:
- T1486
triggerThreshold: 0
name: AV detections related to Europium actors
entityMappings:
- fieldMappings:
  - columnName: CompromisedEntity
    identifier: FullName
  - columnName: HostName
    identifier: HostName
  - columnName: HostNameDomain
    identifier: NTDomain
  entityType: Host
- fieldMappings:
  - columnName: PublicIP
    identifier: Address
  entityType: IP
requiredDataConnectors:
- connectorId: MicrosoftThreatProtection
  dataTypes:
  - SecurityAlert
  - DeviceInfo
id: 186970ee-5001-41c1-8c73-3178f75ce96a
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/SecurityAlert/EuropiumAVHits.yaml
queryPeriod: 1d
tags:
- Europium
tactics:
- Impact
version: 1.1.2
query: |
  let Europium_threats = dynamic(["TrojanDropper:ASP/WebShell!MSR", "Trojan:Win32/BatRunGoXml", "DoS:Win64/WprJooblash", "Ransom:Win32/Eagle!MSR", "Trojan:Win32/Debitom.A"]);
  DeviceInfo
  | extend DeviceName = tolower(DeviceName)
  | join kind=inner ( SecurityAlert
  | where ProviderName == "MDATP"
  | extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)
  | extend ThreatFamilyName = tostring(parse_json(ExtendedProperties).ThreatFamilyName)
  | where ThreatName in~ (Europium_threats) or ThreatFamilyName in~ (Europium_threats)
  | extend CompromisedEntity = tolower(CompromisedEntity)
  ) on $left.DeviceName == $right.CompromisedEntity
  | summarize by DisplayName, ThreatName, ThreatFamilyName, PublicIP, AlertSeverity, Description, tostring(LoggedOnUsers), DeviceId, TenantId, bin(TimeGenerated, 1d), CompromisedEntity, tostring(LoggedOnUsers), ProductName, Entities
  | extend HostName = tostring(split(CompromisedEntity, ".")[0]), DomainIndex = toint(indexof(CompromisedEntity, '.'))
  | extend HostNameDomain = iff(CompromisedEntity != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)

ARM