Imports Registry Key From a File — Sigma Rule

Rule metadata and linked tags

Author: Oddvar Moe, Sander Wiebing, oscd.community. Source status: test; severity: medium. Source dates: 2020-10-07 / 2024-03-13.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 4406a708dbe651e460730476fe8935e655d3d44599cb6a032cad25d859823819

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: Imports Registry Key From a File
id: 73bba97f-a82d-42ce-b315-9182e76c57b1
related:
    - id: 0b80ade5-6997-4b1d-99a1-71701778ea61
      type: similar
status: test
description: Detects the import of the specified file to the registry with regedit.exe.
references:
    - https://lolbas-project.github.io/lolbas/Binaries/Regedit/
    - https://gist.github.com/api0cradle/cdd2d0d0ec9abb686f0e89306e277b8f
author: Oddvar Moe, Sander Wiebing, oscd.community
date: 2020-10-07
modified: 2024-03-13
tags:
    - attack.persistence
    - attack.defense-impairment
    - attack.t1112
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\regedit.exe'
        - OriginalFileName: 'REGEDIT.EXE'
    selection_cli:
        CommandLine|contains:
            - ' /i '
            - ' /s '
            - '.reg'
    filter_1:
        CommandLine|contains|windash:
            - ' -e '
            - ' -a '
            - ' -c '
    filter_2:
        CommandLine|re: ':[^ \\]'     # to avoid intersection with ADS rule
    condition: all of selection_* and not all of filter_*
falsepositives:
    - Legitimate import of keys
    - Evernote
level: medium

Original YAML and metadata in JSON

False positives

• Legitimate import of keys
• Evernote

Source references

• https://lolbas-project.github.io/lolbas/Binaries/Regedit/
• https://gist.github.com/api0cradle/cdd2d0d0ec9abb686f0e89306e277b8f