AADInternals PowerShell Cmdlets Execution - ProccessCreation

Severity: high
Author: Austin Songer (@austinsonger), Nasreddine Bencherchali (Nextron Systems), Swachchhanda Shrawan Poudel (Nextron Systems)
Source: upstream

Detects ADDInternals Cmdlet execution. A tool for administering Azure AD and Office 365. Which can be abused by threat actors to attack Azure AD or Office 365.

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation

Stages and Predicates

Stage 1: `all of selection_img`

or:
Image|endswith: '\powershell.exe'
Image|endswith: '\powershell_ise.exe'
Image|endswith: '\pwsh.exe'
OriginalFileName: PowerShell.Exe
OriginalFileName: pwsh.dll

Stage 2: `all of selection_cli`

or:
CommandLine|contains: Add-AADInt
CommandLine|contains: ConvertTo-AADInt
CommandLine|contains: Disable-AADInt
CommandLine|contains: Enable-AADInt
CommandLine|contains: Export-AADInt
CommandLine|contains: Find-AADInt
CommandLine|contains: Get-AADInt
CommandLine|contains: Grant-AADInt
CommandLine|contains: Initialize-AADInt
CommandLine|contains: Install-AADInt
CommandLine|contains: Invoke-AADInt
CommandLine|contains: Join-AADInt
CommandLine|contains: New-AADInt
CommandLine|contains: Open-AADInt
CommandLine|contains: Read-AADInt
CommandLine|contains: Register-AADInt
CommandLine|contains: Remove-AADInt
CommandLine|contains: Reset-AADInt
CommandLine|contains: Resolve-AADInt
CommandLine|contains: Restore-AADInt
CommandLine|contains: Save-AADInt
CommandLine|contains: Search-AADInt
CommandLine|contains: Send-AADInt
CommandLine|contains: Set-AADInt
CommandLine|contains: Start-AADInt
CommandLine|contains: Unprotect-AADInt
CommandLine|contains: Update-AADInt

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

Field	Kind	Values
`CommandLine`	match	`Add-AADInt` `ConvertTo-AADInt` `Disable-AADInt` `Enable-AADInt` `Export-AADInt` `Find-AADInt` `Get-AADInt` `Grant-AADInt` `Initialize-AADInt` `Install-AADInt` `Invoke-AADInt` `Join-AADInt` `New-AADInt` `Open-AADInt` `Read-AADInt` `Register-AADInt` `Remove-AADInt` `Reset-AADInt` `Resolve-AADInt` `Restore-AADInt` `Save-AADInt` `Search-AADInt` `Send-AADInt` `Set-AADInt` `Start-AADInt` `Unprotect-AADInt` `Update-AADInt`
`Image`	ends_with	`\powershell.exe` corpus 143 (sigma 143) `\powershell_ise.exe` corpus 27 (sigma 27) `\pwsh.exe` corpus 140 (sigma 140)
`OriginalFileName`	eq	`PowerShell.Exe` corpus 2 (sigma 2) `pwsh.dll` corpus 72 (sigma 68, splunk 4)