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Convert indexed Sigma rules into analyst-ready detections.
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Indexed Rules
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CLI Versions
10
Newest: 2.0.2
Translation Workspace
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Active Rule
New File Exclusion Added To Time Machine Via Tmutil - MacOS
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
New File Exclusion Added To Time Machine Via Tmutil - MacOS
Using Splunk · Default · sigma-cli 2.0.2
Translation controls
Adjust the rule on the left, then regenerate when you want a fresh backend-native query.
BackendSplunkFormatDefaultVersion2.0.2
title: New File Exclusion Added To Time Machine Via Tmutil - MacOS
id: 9acf45ed-3a26-4062-bf08-56857613eb52
status: test
description: |
Detects the addition of a new file or path exclusion to MacOS Time Machine via the "tmutil" utility.
An adversary could exclude a path from Time Machine backups to prevent certain files from being backed up.
references:
- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1490/T1490.md#atomic-test-12---disable-time-machine
- https://www.loobins.io/binaries/tmutil/
author: Pratinav Chandra
date: 2024-05-29
tags:
- attack.impact
- attack.t1490
logsource:
category: process_creation
product: macos
detection:
selection_img:
- Image|endswith: '/tmutil'
- CommandLine|contains: 'tmutil'
selection_cmd:
CommandLine|contains: 'addexclusion'
condition: all of selection_*
falsepositives:
- Legitimate administrator activity
level: medium
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/macos/process_creation/proc_creation_macos_tmutil_exclude_file_from_backup.yml