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Convert indexed Sigma rules into analyst-ready detections.
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Indexed Rules
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CLI Versions
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Newest: 2.0.2
Translation Workspace
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Active Rule
Linux Setgid Capability Set on a Binary via Setcap Utility
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Linux Setgid Capability Set on a Binary via Setcap Utility
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: Linux Setgid Capability Set on a Binary via Setcap Utility
id: 3a716279-c18c-4488-83be-f9ececbfb9fc
status: experimental
description: |
Detects the use of the 'setcap' utility to set the 'setgid' capability (cap_setgid) on a binary file.
This capability allows a non privileged process to make arbitrary manipulations of group IDs (GIDs), including setting its current GID to a value that would otherwise be restricted (i.e. GID 0, the root group).
This behavior can be used by adversaries to backdoor a binary in order to escalate privileges again in the future if needed.
references:
- https://man7.org/linux/man-pages/man8/setcap.8.html
- https://dfir.ch/posts/linux_capabilities/
- https://juggernaut-sec.com/capabilities/#cap_setgid
author: Luc Génaux
date: 2026-01-24
tags:
- attack.privilege-escalation
- attack.defense-evasion
- attack.persistence
- attack.t1548
- attack.t1554
logsource:
product: linux
category: process_creation
detection:
selection:
Image|endswith: '/setcap'
CommandLine|contains: 'cap_setgid'
condition: selection
falsepositives:
- Unknown
level: low
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/linux/process_creation/proc_creation_lnx_cap_setgid.yml