Process Monitor Driver Creation By Non-Sysinternals Binary — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: medium. Source dates: 2023-05-05 / not supplied.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 0a88d7e44b4e9ebef3d8e0a3ed62f087490023dd422aad4feaf924f15463020b

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: Process Monitor Driver Creation By Non-Sysinternals Binary
id: a05baa88-e922-4001-bc4d-8738135f27de
status: test
description: Detects creation of the Process Monitor driver by processes other than Process Monitor (procmon) itself.
references:
    - Internal Research
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-05-05
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.t1068
logsource:
    product: windows
    category: file_event
detection:
    selection:
        TargetFilename|contains: '\procmon'
        TargetFilename|endswith: '.sys'
    filter_main_process_explorer:
        Image|endswith:
            - '\procmon.exe'
            - '\procmon64.exe'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Some false positives may occur with legitimate renamed process monitor binaries
level: medium

Original YAML and metadata in JSON

False positives

• Some false positives may occur with legitimate renamed process monitor binaries

Source references

• Internal Research (source note; no public URL supplied)