Deimos Component Execution

DeviceEvents   
| where InitiatingProcessFileName =~ "powershell.exe"
| where ActionType == "AmsiScriptContent"
| where AdditionalFields endswith '[mArS.deiMos]::inteRaCt()"}'
| project InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessCommandLine, ActionType, AdditionalFields, DeviceName
| extend HostName = iff(DeviceName has '.', substring(DeviceName, 0, indexof(DeviceName, '.')), DeviceName)
| extend DnsDomain = iff(DeviceName has '.', substring(DeviceName, indexof(DeviceName, '.') + 1), "")

queryPeriod: 1h
tags:
- SolarMarker
- Jupyter
- Ransomware
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Defender XDR/Analytic Rules/Campaign/Jupyter-Solarmaker/DeimosComponentExecution.yaml
requiredDataConnectors:
- connectorId: MicrosoftThreatProtection
  dataTypes:
  - DeviceEvents
severity: High
id: c25a8cd4-5b4a-45a8-9ba0-3b753a652f6b
name: Deimos Component Execution
description: |
    Jupyter, otherwise known as SolarMarker, is a malware family and cluster of components known for its info-stealing and backdoor capabilities that mainly proliferates through search engine optimization manipulation and malicious advertising in order to successfully encourage users to download malicious templates and documents. This malware has been popular since 2020 and currently is still active as of 2021.
queryFrequency: 1h
triggerThreshold: 0
status: Available
triggerOperator: gt
tactics:
- Execution
- Collection
- Exfiltration
kind: Scheduled
version: 1.0.0
query: |
  DeviceEvents   
  | where InitiatingProcessFileName =~ "powershell.exe"
  | where ActionType == "AmsiScriptContent"
  | where AdditionalFields endswith '[mArS.deiMos]::inteRaCt()"}'
  | project InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessCommandLine, ActionType, AdditionalFields, DeviceName
  | extend HostName = iff(DeviceName has '.', substring(DeviceName, 0, indexof(DeviceName, '.')), DeviceName)
  | extend DnsDomain = iff(DeviceName has '.', substring(DeviceName, indexof(DeviceName, '.') + 1), "")  
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: DeviceName
  - identifier: HostName
    columnName: HostName
  - identifier: DnsDomain
    columnName: DnsDomain
  entityType: Host
relevantTechniques:
- T1059
- T1005
- T1020

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/c25a8cd4-5b4a-45a8-9ba0-3b753a652f6b')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/c25a8cd4-5b4a-45a8-9ba0-3b753a652f6b')]",
      "properties": {
        "alertRuleTemplateName": "c25a8cd4-5b4a-45a8-9ba0-3b753a652f6b",
        "customDetails": null,
        "description": "Jupyter, otherwise known as SolarMarker, is a malware family and cluster of components known for its info-stealing and backdoor capabilities that mainly proliferates through search engine optimization manipulation and malicious advertising in order to successfully encourage users to download malicious templates and documents. This malware has been popular since 2020 and currently is still active as of 2021.\n",
        "displayName": "Deimos Component Execution",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "DeviceName",
                "identifier": "FullName"
              },
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "DnsDomain",
                "identifier": "DnsDomain"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Defender XDR/Analytic Rules/Campaign/Jupyter-Solarmaker/DeimosComponentExecution.yaml",
        "query": "DeviceEvents   \n| where InitiatingProcessFileName =~ \"powershell.exe\"\n| where ActionType == \"AmsiScriptContent\"\n| where AdditionalFields endswith '[mArS.deiMos]::inteRaCt()\"}'\n| project InitiatingProcessParentFileName, InitiatingProcessFileName, InitiatingProcessCommandLine, ActionType, AdditionalFields, DeviceName\n| extend HostName = iff(DeviceName has '.', substring(DeviceName, 0, indexof(DeviceName, '.')), DeviceName)\n| extend DnsDomain = iff(DeviceName has '.', substring(DeviceName, indexof(DeviceName, '.') + 1), \"\")\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Collection",
          "Execution",
          "Exfiltration"
        ],
        "tags": [
          "SolarMarker",
          "Jupyter",
          "Ransomware"
        ],
        "techniques": [
          "T1005",
          "T1020",
          "T1059"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}