Suspicious Printer Driver Empty Manufacturer — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems). Source status: test; severity: high. Source dates: 2020-07-01 / 2023-08-17.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: fd6641a54f860504e4c3787acb5ad3085a98557546b29a6566126431a367282b

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 Printer Driver Empty Manufacturer
id: e0813366-0407-449a-9869-a2db1119dc41
status: test
description: Detects a suspicious printer driver installation with an empty Manufacturer value
references:
    - https://twitter.com/SBousseaden/status/1410545674773467140
author: Florian Roth (Nextron Systems)
date: 2020-07-01
modified: 2023-08-17
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.execution
    - attack.stealth
    - attack.t1574
    - cve.2021-1675
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|contains|all:
            - '\Control\Print\Environments\Windows x64\Drivers'
            - '\Manufacturer'
        Details: '(Empty)'
    filter_cutepdf:
        TargetObject|contains: '\CutePDF Writer v4.0\'
    filter_vnc:
        TargetObject|contains:
            - '\VNC Printer (PS)\'
            - '\VNC Printer (UD)\'
    filter_pdf24:
        TargetObject|contains: '\Version-3\PDF24\'
    condition: selection and not 1 of filter_*
falsepositives:
    - Alerts on legitimate printer drivers that do not set any more details in the Manufacturer value
level: high

Original YAML and metadata in JSON

False positives

• Alerts on legitimate printer drivers that do not set any more details in the Manufacturer value

Source references

• https://twitter.com/SBousseaden/status/1410545674773467140