Exchange PowerShell Snapin Added (Normalized Process Events)

id: 9ccb1859-7a79-4a8a-a382-fa54d4dace47
name: Exchange PowerShell Snapin Added (Normalized Process Events)
description: |
  'The Exchange Powershell Snapin was loaded on a host, this allows for a Exchange server management via PowerShell.
  Whilst this is a legitimate administrative tool it is abused by attackers to performs actions on a compromised
  Exchange server. Hunt for unusual activity related to this Snapin including it being added on new hosts or by
  new accounts.'
requiredDataConnectors: []
tactics:
  - Collection
relevantTechniques:
  - T1119
query: |
  imProcessCreate
   | where Process has_any ("cmd.exe", "powershell.exe", "PowerShell_ISE.exe")
   | where CommandLine has "Add-PSSnapin Microsoft.Exchange.Management.Powershell.Snapin"
   | summarize FirstSeen = min(TimeGenerated), LastSeen = max(TimeGenerated) by Dvc, User, CommandLine, EventVendor, EventProduct
   | extend timestamp = FirstSeen, AccountCustomEntity = User, HostCustomEntity = Dvc
entityMappings:
  - entityType: Account
    fieldMappings:
      - identifier: FullName
        columnName: AccountCustomEntity
  - entityType: Host
    fieldMappings:
      - identifier: FullName
        columnName: HostCustomEntity