Suspicious Kernel Dump Using Dtrace — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems). Source status: test; severity: high. Source dates: 2021-12-28 / not supplied.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: eb5b30c19f08b8c7b518ab12672403b41df8ab3c88da06b435d75c4833caf961

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: Suspicious Kernel Dump Using Dtrace
id: 7124aebe-4cd7-4ccb-8df0-6d6b93c96795
status: test
description: Detects suspicious way to dump the kernel on Windows systems using dtrace.exe, which is available on Windows systems since Windows 10 19H1
references:
    - https://twitter.com/0gtweet/status/1474899714290208777?s=12
    - https://learn.microsoft.com/en-us/windows-hardware/drivers/devtest/dtrace
author: Florian Roth (Nextron Systems)
date: 2021-12-28
tags:
    - attack.discovery
    - attack.t1082
logsource:
    product: windows
    category: process_creation
detection:
    selection_plain:
        Image|endswith: '\dtrace.exe'
        CommandLine|contains: 'lkd(0)'
    selection_obfuscated:
        CommandLine|contains|all:
            - 'syscall:::return'
            - 'lkd('
    condition: 1 of selection*
falsepositives:
    - Unknown
level: high
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_dtrace_kernel_dump/info.yml

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://twitter.com/0gtweet/status/1474899714290208777?s=12
• https://learn.microsoft.com/en-us/windows-hardware/drivers/devtest/dtrace