HackTool - Certify Execution — Sigma Rule

Rule metadata and linked tags

Author: pH-T (Nextron Systems). Source status: test; severity: high. Source dates: 2023-04-17 / 2023-04-25.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 003bcf98e93205889ba172b571f6a6a71314cc05d320e2d2b5142d388a1f3291

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: HackTool - Certify Execution
id: 762f2482-ff21-4970-8939-0aa317a886bb
status: test
description: Detects Certify a tool for Active Directory certificate abuse based on PE metadata characteristics and common command line arguments.
references:
    - https://github.com/GhostPack/Certify
author: pH-T (Nextron Systems)
date: 2023-04-17
modified: 2023-04-25
tags:
    - attack.discovery
    - attack.credential-access
    - attack.t1649
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\Certify.exe'
        - OriginalFileName: 'Certify.exe'
        - Description|contains: 'Certify'
    selection_cli_commands:
        CommandLine|contains:
            - '.exe cas '
            - '.exe find '
            - '.exe pkiobjects '
            - '.exe request '
            - '.exe download '
    selection_cli_options:
        CommandLine|contains:
            - ' /vulnerable'
            - ' /template:'
            - ' /altname:'
            - ' /domain:'
            - ' /path:'
            - ' /ca:'
    condition: selection_img or all of selection_cli_*
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/GhostPack/Certify