Capabilities Discovery - Linux — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: low. Source dates: 2022-12-28 / 2026-01-24.

{
  "category": "process_creation",
  "product": "linux"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: cc46db8bc81860e2c0ecd59f4590d9cb2bbbfa48203ecaf6ebe83dea23238a8a

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Capabilities Discovery - Linux
id: d8d97d51-122d-4cdd-9e2f-01b4b4933530
status: test
description: Detects usage of "getcap" binary. This is often used during recon activity to determine potential binaries that can be abused as GTFOBins or other.
references:
    - https://github.com/SaiSathvik1/Linux-Privilege-Escalation-Notes
    - https://github.com/carlospolop/PEASS-ng
    - https://github.com/diego-treitos/linux-smart-enumeration
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-12-28
modified: 2026-01-24
tags:
    - attack.discovery
    - attack.t1083
logsource:
    category: process_creation
    product: linux
detection:
    selection:
        Image|endswith: '/getcap'
        CommandLine|contains: ' -r '
    condition: selection
falsepositives:
    - Unknown
level: low

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/SaiSathvik1/Linux-Privilege-Escalation-Notes
• https://github.com/carlospolop/PEASS-ng
• https://github.com/diego-treitos/linux-smart-enumeration