sigmacriticalHunting

HackTool - Mimikatz Kirbi File Creation

Detects the creation of files created by mimikatz such as ".kirbi", "mimilsa.log", etc.

MITRE ATT&CK

credential-access

Detection Query

selection:
  TargetFilename|endswith:
    - .kirbi
    - mimilsa.log
condition: selection

Author

Florian Roth (Nextron Systems), David ANDRE

Created

2021-11-08

Data Sources

windowsFile Events

Platforms

windows

References

Tags

attack.credential-accessattack.t1558

Raw Content

title: HackTool - Mimikatz Kirbi File Creation
id: 9e099d99-44c2-42b6-a6d8-54c3545cab29
related:
    - id: 034affe8-6170-11ec-844f-0f78aa0c4d66
      type: obsolete
status: test
description: Detects the creation of files created by mimikatz such as ".kirbi", "mimilsa.log", etc.
references:
    - https://cobalt.io/blog/kerberoast-attack-techniques
    - https://pentestlab.blog/2019/10/21/persistence-security-support-provider/
author: Florian Roth (Nextron Systems), David ANDRE
date: 2021-11-08
modified: 2024-06-27
tags:
    - attack.credential-access
    - attack.t1558
logsource:
    category: file_event
    product: windows
detection:
    selection:
        TargetFilename|endswith:
            - '.kirbi' # Kerberos tickets
            - 'mimilsa.log' # MemSSP default file
    condition: selection
falsepositives:
    - Unlikely
level: critical