Microsoft Sentinel Analytic Rules
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Windows Binaries Lolbins Renamed

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Idcbf6ad48-fa5c-4bf7-b205-28dbadb91255
RulenameWindows Binaries Lolbins Renamed
DescriptionThis query detects the execution of renamed Windows binaries (Lolbins). This is a common technique used by adversaries to evade detection.

Ref: https://docs.paloaltonetworks.com/cortex/cortex-xdr/cortex-xdr-analytics-alert-reference/cortex-xdr-analytics-alert-reference/execution-of-renamed-lolbin.html
SeverityMedium
TacticsExecution
TechniquesT1059
Required data connectorsSecurityEvents
WindowsSecurityEvents
KindScheduled
Query frequency1h
Query period1h
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Endpoint Threat Protection Essentials/Analytic Rules/WindowsBinariesLolbinsRenamed.yaml
Version1.0.3
Arm templatecbf6ad48-fa5c-4bf7-b205-28dbadb91255.json
Deploy To Azure
let procList = externaldata(Process:string) [@"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Microsoft_Lolbas_Execution_Binaries.csv"] with (format="csv", ignoreFirstRecord=True);
Event
| where EventLog =~ "Microsoft-Windows-Sysmon/Operational" and EventID==1
| parse EventData with * 'Image">' Image "<" * 'OriginalFileName">' OriginalFileName "<" *
| where OriginalFileName has_any (procList) and not (Image has_any (procList))
| parse EventData with * 'ProcessGuid">' ProcessGuid "<" * 'Description">' Description "<" * 'CommandLine">' CommandLine "<" * 'CurrentDirectory">' CurrentDirectory "<" * 'User">' User "<" * 'LogonGuid">' LogonGuid "<" * 'Hashes">' Hashes "<" * 'ParentProcessGuid">' ParentProcessGuid "<" * 'ParentImage">' ParentImage "<" * 'ParentCommandLine">' ParentCommandLine "<" * 'ParentUser">' ParentUser "<" *
| summarize StartTime = min(TimeGenerated), EndTime = max(TimeGenerated) by EventID, Computer, User, ParentImage, ParentProcessGuid, ParentCommandLine, ParentUser, Image, ProcessGuid, CommandLine, Description, OriginalFileName, CurrentDirectory, Hashes
| extend HostName = iif(Computer has '.',substring(Computer,0,indexof(Computer,'.')),Computer) , DnsDomain = iif(Computer has '.',substring(Computer,indexof(Computer,'.')+1),'')
queryPeriod: 1h
version: 1.0.3
tactics:
- Execution
queryFrequency: 1h
id: cbf6ad48-fa5c-4bf7-b205-28dbadb91255
triggerOperator: gt
requiredDataConnectors:
- dataTypes:
  - SecurityEvent
  connectorId: SecurityEvents
- dataTypes:
  - SecurityEvent
  connectorId: WindowsSecurityEvents
severity: Medium
entityMappings:
- entityType: Process
  fieldMappings:
  - columnName: CommandLine
    identifier: CommandLine
- entityType: Host
  fieldMappings:
  - columnName: Computer
    identifier: FullName
  - columnName: HostName
    identifier: HostName
  - columnName: DnsDomain
    identifier: DnsDomain
- entityType: Account
  fieldMappings:
  - columnName: User
    identifier: Name
triggerThreshold: 0
relevantTechniques:
- T1059
query: |
  let procList = externaldata(Process:string) [@"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Microsoft_Lolbas_Execution_Binaries.csv"] with (format="csv", ignoreFirstRecord=True);
  Event
  | where EventLog =~ "Microsoft-Windows-Sysmon/Operational" and EventID==1
  | parse EventData with * 'Image">' Image "<" * 'OriginalFileName">' OriginalFileName "<" *
  | where OriginalFileName has_any (procList) and not (Image has_any (procList))
  | parse EventData with * 'ProcessGuid">' ProcessGuid "<" * 'Description">' Description "<" * 'CommandLine">' CommandLine "<" * 'CurrentDirectory">' CurrentDirectory "<" * 'User">' User "<" * 'LogonGuid">' LogonGuid "<" * 'Hashes">' Hashes "<" * 'ParentProcessGuid">' ParentProcessGuid "<" * 'ParentImage">' ParentImage "<" * 'ParentCommandLine">' ParentCommandLine "<" * 'ParentUser">' ParentUser "<" *
  | summarize StartTime = min(TimeGenerated), EndTime = max(TimeGenerated) by EventID, Computer, User, ParentImage, ParentProcessGuid, ParentCommandLine, ParentUser, Image, ProcessGuid, CommandLine, Description, OriginalFileName, CurrentDirectory, Hashes
  | extend HostName = iif(Computer has '.',substring(Computer,0,indexof(Computer,'.')),Computer) , DnsDomain = iif(Computer has '.',substring(Computer,indexof(Computer,'.')+1),'')  
kind: Scheduled
name: Windows Binaries Lolbins Renamed
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Endpoint Threat Protection Essentials/Analytic Rules/WindowsBinariesLolbinsRenamed.yaml
description: |
  'This query detects the execution of renamed Windows binaries (Lolbins). This is a common technique used by adversaries to evade detection. 
  Ref: https://docs.paloaltonetworks.com/cortex/cortex-xdr/cortex-xdr-analytics-alert-reference/cortex-xdr-analytics-alert-reference/execution-of-renamed-lolbin.html'  
status: Available
{
  "$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/cbf6ad48-fa5c-4bf7-b205-28dbadb91255')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/cbf6ad48-fa5c-4bf7-b205-28dbadb91255')]",
      "properties": {
        "alertRuleTemplateName": "cbf6ad48-fa5c-4bf7-b205-28dbadb91255",
        "customDetails": null,
        "description": "'This query detects the execution of renamed Windows binaries (Lolbins). This is a common technique used by adversaries to evade detection. \nRef: https://docs.paloaltonetworks.com/cortex/cortex-xdr/cortex-xdr-analytics-alert-reference/cortex-xdr-analytics-alert-reference/execution-of-renamed-lolbin.html'\n",
        "displayName": "Windows Binaries Lolbins Renamed",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Process",
            "fieldMappings": [
              {
                "columnName": "CommandLine",
                "identifier": "CommandLine"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "Computer",
                "identifier": "FullName"
              },
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "DnsDomain",
                "identifier": "DnsDomain"
              }
            ]
          },
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "User",
                "identifier": "Name"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Endpoint Threat Protection Essentials/Analytic Rules/WindowsBinariesLolbinsRenamed.yaml",
        "query": "let procList = externaldata(Process:string) [@\"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Microsoft_Lolbas_Execution_Binaries.csv\"] with (format=\"csv\", ignoreFirstRecord=True);\nEvent\n| where EventLog =~ \"Microsoft-Windows-Sysmon/Operational\" and EventID==1\n| parse EventData with * 'Image\">' Image \"<\" * 'OriginalFileName\">' OriginalFileName \"<\" *\n| where OriginalFileName has_any (procList) and not (Image has_any (procList))\n| parse EventData with * 'ProcessGuid\">' ProcessGuid \"<\" * 'Description\">' Description \"<\" * 'CommandLine\">' CommandLine \"<\" * 'CurrentDirectory\">' CurrentDirectory \"<\" * 'User\">' User \"<\" * 'LogonGuid\">' LogonGuid \"<\" * 'Hashes\">' Hashes \"<\" * 'ParentProcessGuid\">' ParentProcessGuid \"<\" * 'ParentImage\">' ParentImage \"<\" * 'ParentCommandLine\">' ParentCommandLine \"<\" * 'ParentUser\">' ParentUser \"<\" *\n| summarize StartTime = min(TimeGenerated), EndTime = max(TimeGenerated) by EventID, Computer, User, ParentImage, ParentProcessGuid, ParentCommandLine, ParentUser, Image, ProcessGuid, CommandLine, Description, OriginalFileName, CurrentDirectory, Hashes\n| extend HostName = iif(Computer has '.',substring(Computer,0,indexof(Computer,'.')),Computer) , DnsDomain = iif(Computer has '.',substring(Computer,indexof(Computer,'.')+1),'')\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Execution"
        ],
        "techniques": [
          "T1059"
        ],
        "templateVersion": "1.0.3",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}