Detection rules › Sigma
GUI Input Capture - macOS
Detects attempts to use system dialog prompts to capture user credentials
Known false positives
- Legitimate administration tools and activities
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Credential Access | |
| Collection |
Telemetry coverage
Rule body
title: GUI Input Capture - macOS
id: 60f1ce20-484e-41bd-85f4-ac4afec2c541
status: test
description: Detects attempts to use system dialog prompts to capture user credentials
references:
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1056.002/T1056.002.md
- https://scriptingosx.com/2018/08/user-interaction-from-bash-scripts/
author: remotephone, oscd.community
date: 2020-10-13
modified: 2025-12-05
tags:
- attack.collection
- attack.credential-access
- attack.t1056.002
logsource:
product: macos
category: process_creation
detection:
selection_img:
Image|endswith: '/osascript'
selection_cli_1:
CommandLine|contains|all:
- '-e'
- 'display'
- 'dialog'
- 'answer'
selection_cli_2:
CommandLine|contains:
- 'admin'
- 'administrator'
- 'authenticate'
- 'authentication'
- 'credentials'
- 'pass'
- 'password'
- 'unlock'
condition: all of selection_*
falsepositives:
- Legitimate administration tools and activities
level: low
Stages and Predicates
Stage 0: condition
all of selection_*Stage 1: selection_img
selection_img:
Image|endswith: '/osascript'
Stage 2: selection_cli_1
selection_cli_1:
CommandLine|contains|all:
- '-e'
- 'display'
- 'dialog'
- 'answer'
Stage 3: selection_cli_2
selection_cli_2:
CommandLine|contains:
- 'admin'
- 'administrator'
- 'authenticate'
- 'authentication'
- 'credentials'
- 'pass'
- 'password'
- 'unlock'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match |
Image | ends_with |
| field:"Image" kind:ends_with value:"/osascript" |