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Convert indexed Sigma rules into analyst-ready detections.
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CLI Versions
10
Newest: 2.0.2
Translation Workspace
Shape the rule before it leaves Phoenix
Tune Translation
Active Rule
Remove Immutable File Attribute - Auditd
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Remove Immutable File Attribute - Auditd
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: Remove Immutable File Attribute - Auditd
id: a5b977d6-8a81-4475-91b9-49dbfcd941f7
status: test
description: Detects removing immutable file attribute.
references:
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1222.002/T1222.002.md
author: Jakob Weinzettl, oscd.community
date: 2019-09-23
modified: 2022-11-26
tags:
- attack.defense-evasion
- attack.t1222.002
logsource:
product: linux
service: auditd
detection:
selection:
type: 'EXECVE'
a0|contains: 'chattr'
a1|contains: '-i'
condition: selection
falsepositives:
- Administrator interacting with immutable files (e.g. for instance backups).
level: medium
simulation:
- type: atomic-red-team
name: Remove immutable file attribute
technique: T1222.002
atomic_guid: e7469fe2-ad41-4382-8965-99b94dd3c13f
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/linux/auditd/execve/lnx_auditd_chattr_immutable_removal.yml