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Capabilities Discovery - Linux — Sigma Rule

Sigma rule d8d97d51-122d-4cdd-9e2f-01b4b4933530. Capabilities Discovery - Linux — Sigma Rule. Detects usage of "getcap" binary. This is often used during recon activity to determine potential binaries that can be abused as GTFOBins or other.

Rule metadata and linked tags

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

Original logsource
{
  "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.

Original Sigma rule YAML, scroll horizontally if needed
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

Connected ecosystem references

Exact source-tagged techniques

Telemetry review

Read the original logsource above, then inspect the linked detection workspaces for technique-level sensor context. No per-rule telemetry equivalence is inferred.

Pinned research references. No browser attack runner or production-validated detector is asserted. Imported procedures remain unvalidated; any bounded lab evidence has its own scope. ATT&CK / Atomic provenance · Detection provenance.