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), "")

relevantTechniques:
- T1059
- T1005
- T1020
name: Deimos Component Execution
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), "")  
queryPeriod: 1h
tactics:
- Execution
- Collection
- Exfiltration
triggerOperator: gt
requiredDataConnectors:
- dataTypes:
  - DeviceEvents
  connectorId: MicrosoftThreatProtection
entityMappings:
- entityType: Host
  fieldMappings:
  - columnName: DeviceName
    identifier: FullName
  - columnName: HostName
    identifier: HostName
  - columnName: DnsDomain
    identifier: DnsDomain
id: c25a8cd4-5b4a-45a8-9ba0-3b753a652f6b
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.
status: Available
queryFrequency: 1h
kind: Scheduled
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Defender XDR/Analytic Rules/Campaign/Jupyter-Solarmaker/DeimosComponentExecution.yaml
triggerThreshold: 0
tags:
- SolarMarker
- Jupyter
- Ransomware
severity: High
version: 1.0.0

{
  "$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"
    }
  ]
}