Sigma rule: Active Directory Computers Enumeration With Get-AdComputer

Rule

Title

Active Directory Computers Enumeration With Get-AdComputer

Status

test

Level

low

Author

frack113

Date

2022-03-17

Modified

2023-07-08

File

rules/windows/powershell/powershell_script/posh_ps_get_adcomputer.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects usage of the "Get-AdComputer" to enumerate Computers or properties within Active Directory.

Log source

product

windows

category

ps_script

definition

Requirements: Script Block Logging must be enabled

Detection

selection_cmdlet:
    ScriptBlockText|contains: 'Get-AdComputer '
selection_option:
    ScriptBlockText|contains:
        - '-Filter '
        - '-LDAPFilter '
        - '-Properties '
condition: all of selection_*

False positives (as the rule lists them)

• Unknown

Tags

• attack.discovery
• attack.t1018
• attack.t1087.002

MITRE ATT&CK ids this rule names

• T1018
• T1087.002

References

• https://learn.microsoft.com/en-us/powershell/module/activedirectory/get-adcomputer
• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1018/T1018.md
• https://github.com/redcanaryco/atomic-red-team/blob/02cb591f75064ffe1e0df9ac3ed5972a2e491c97/atomics/T1087.002/T1087.002.md

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/powershell/powershell_script/posh_ps_get_adcomputer.yml