Virtualbox Driver Installation or Starting of VMs — Sigma Rule

Rule metadata and linked tags

Author: Janantha Marasinghe. Source status: test; severity: low. Source dates: 2020-09-26 / 2025-07-29.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 5d9d1a21a36c7749091be3de5772b2e52879f1aa0fe6fa6f4d528fe2ae986bc7

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: Virtualbox Driver Installation or Starting of VMs
id: bab049ca-7471-4828-9024-38279a4c04da
status: test
description: Adversaries can carry out malicious operations using a virtual instance to avoid detection. This rule is built to detect the registration of the Virtualbox driver or start of a Virtualbox VM.
references:
    - https://news.sophos.com/en-us/2020/05/21/ragnar-locker-ransomware-deploys-virtual-machine-to-dodge-security/
    - https://threatpost.com/maze-ransomware-ragnar-locker-virtual-machine/159350/
author: Janantha Marasinghe
date: 2020-09-26
modified: 2025-07-29
tags:
    - attack.stealth
    - attack.t1564.006
    - attack.t1564
logsource:
    category: process_creation
    product: windows
detection:
    selection_1:
        CommandLine|contains:
            - 'VBoxRT.dll,RTR3Init'
            - 'VBoxC.dll'
            - 'VBoxDrv.sys'
    selection_2:
        CommandLine|contains:
            - 'startvm'
            - 'controlvm'
    condition: 1 of selection_*
falsepositives:
    - This may have false positives on hosts where Virtualbox is legitimately being used for operations
level: low

Original YAML and metadata in JSON

False positives

• This may have false positives on hosts where Virtualbox is legitimately being used for operations

Source references

• https://news.sophos.com/en-us/2020/05/21/ragnar-locker-ransomware-deploys-virtual-machine-to-dodge-security/
• https://threatpost.com/maze-ransomware-ragnar-locker-virtual-machine/159350/