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P4T12ICK
84 lines
2.8 KiB
YAML
84 lines
2.8 KiB
YAML
name: Rubeus Command Line Parameters
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id: cca37478-8377-11ec-b59a-acde48001122
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version: 1
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date: '2022-02-01'
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author: Mauricio Velazco, Splunk
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status: production
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type: TTP
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description: Rubeus is a C# toolset for raw Kerberos interaction and abuses. It is
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heavily adapted from Benjamin Delpys Kekeo project and Vincent LE TOUXs MakeMeEnterpriseAdmin
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project. This analytic looks for the use of Rubeus command line arguments utilized
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in common Kerberos attacks like exporting and importing tickets, forging silver
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and golden tickets, requesting a TGT or TGS, kerberoasting, password spraying, etc.
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Red teams and adversaries alike use Rubeus for Kerberos attacks within Active Directory
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networks. Defenders should be aware that adversaries may customize the source code
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of Rubeus and modify the command line parameters. This would effectively bypass
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this analytic.
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data_source:
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- Sysmon Event ID 1
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search:
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selection1:
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CommandLine:
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- '*ptt /ticket*'
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- '* monitor /interval*'
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- '* asktgt* /user:*'
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- '* asktgs* /service:*'
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- '* golden* /user:*'
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- '* silver* /service:*'
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- '* kerberoast*'
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- '* asreproast*'
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- '* renew* /ticket:*'
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- '* brute* /password:*'
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- '* brute* /passwords:*'
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- '* harvest*'
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condition: (selection1)
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how_to_implement: To successfully implement this search, you need to be ingesting
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logs with the process name, parent process, and command-line executions from your
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endpoints. If you are using Sysmon, you must have at least version 6.0.4 of the
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Sysmon TA.
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known_false_positives: Although unlikely, legitimate applications may use the same
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command line parameters as Rubeus. Filter as needed.
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references:
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- https://github.com/GhostPack/Rubeus
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- https://web.archive.org/web/20210725005734/http://www.harmj0y.net/blog/redteaming/from-kekeo-to-rubeus/
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- https://attack.mitre.org/techniques/T1550/003/
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- https://en.hackndo.com/kerberos-silver-golden-tickets/
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tags:
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analytic_story:
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- Active Directory Kerberos Attacks
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asset_type: Endpoint
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confidence: 60
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impact: 60
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message: Rubeus command line parameters were used on $dest$
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mitre_attack_id:
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- T1550
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- T1550.003
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- T1558
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- T1558.003
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- T1558.004
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observable:
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- name: user
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type: User
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role:
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- Victim
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- name: dest
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type: Hostname
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role:
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- Victim
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- name: parent_process_name
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type: Process
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role:
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- Parent Process
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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risk_score: 36
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security_domain: endpoint
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tests:
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- name: True Positive Test
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attack_data:
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- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1550.003/rubeus/windows-sysmon.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: xmlwineventlog
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