HackTool - Rubeus Execution — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems). Source status: stable; severity: critical. Source dates: 2018-12-19 / 2023-04-20.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 47558b7a25f2292e1371f32c41d380f723a7e15efafa402b3103defbf9e16c29

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 - Rubeus Execution
id: 7ec2c172-dceb-4c10-92c9-87c1881b7e18
related:
    - id: 7ec2c172-dceb-4c10-92c9-87c1881b7e18
      type: similar
status: stable
description: Detects the execution of the hacktool Rubeus via PE information of command line parameters
references:
    - https://blog.harmj0y.net/redteaming/from-kekeo-to-rubeus
    - https://m0chan.github.io/2019/07/31/How-To-Attack-Kerberos-101.html
    - https://github.com/GhostPack/Rubeus
author: Florian Roth (Nextron Systems)
date: 2018-12-19
modified: 2023-04-20
tags:
    - attack.credential-access
    - attack.t1003
    - attack.t1558.003
    - attack.lateral-movement
    - attack.t1550.003
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - Image|endswith: '\Rubeus.exe'
        - OriginalFileName: 'Rubeus.exe'
        - Description: 'Rubeus'
        - CommandLine|contains:
              - 'asreproast '
              - 'dump /service:krbtgt '
              - 'dump /luid:0x'
              - 'kerberoast '
              - 'createnetonly /program:'
              - 'ptt /ticket:'
              - '/impersonateuser:'
              - 'renew /ticket:'
              - 'asktgt /user:'
              - 'harvest /interval:'
              - 's4u /user:'
              - 's4u /ticket:'
              - 'hash /password:'
              - 'golden /aes256:'
              - 'silver /user:'
    condition: selection
falsepositives:
    - Unlikely
level: critical

Original YAML and metadata in JSON

False positives

• Unlikely

Source references

• https://blog.harmj0y.net/redteaming/from-kekeo-to-rubeus
• https://m0chan.github.io/2019/07/31/How-To-Attack-Kerberos-101.html
• https://github.com/GhostPack/Rubeus