huntrule

Windows UltraViewer Desktop App Execution

Alerts on execution of UltraViewer Desktop on Windows based on executable metadata in process creation events.

FreeUnreviewedSigmamediumv1
title: Windows UltraViewer Desktop App Execution
id: b488fe52-36cb-461d-8955-2cc801190b97
status: test
description: This rule flags process creation events where the executed binary matches UltraViewer Desktop components, identified by product, company, and original filename. Attackers can use legitimate remote access software to establish interactive control over systems, blending into expected administrative or support tooling. The detection relies on Windows process creation telemetry and specific executable metadata (Product, Company, and OriginalFileName).
references:
  - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1219/T1219.md
  - https://github.com/SigmaHQ/sigma/blob/master/rules/windows/process_creation/proc_creation_win_remote_access_tools_ultraviewer.yml
author: frack113, Huntrule Team
date: 2022-09-25
modified: 2024-03-14
tags:
  - attack.command-and-control
  - attack.t1219.002
logsource:
  category: process_creation
  product: windows
detection:
  selection:
    - Product: UltraViewer
    - Company: DucFabulous Co,ltd
    - OriginalFileName: UltraViewer_Desktop.exe
  condition: selection
falsepositives:
  - Legitimate use
level: medium
license: DRL-1.1
related:
  - id: 88656cec-6c3b-487c-82c0-f73ebb805503
    type: derived

What it detects

This rule flags process creation events where the executed binary matches UltraViewer Desktop components, identified by product, company, and original filename. Attackers can use legitimate remote access software to establish interactive control over systems, blending into expected administrative or support tooling. The detection relies on Windows process creation telemetry and specific executable metadata (Product, Company, and OriginalFileName).

Known false positives

  • Legitimate use

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.