1200KM / sigma-rule
Capsh Shell Invocation - Linux — Sigma Rule
Sigma rule db1ac3be-f606-4e3a-89e0-9607cbe6b98a. Capsh Shell Invocation - Linux — Sigma Rule. Detects the use of the "capsh" utility to invoke a shell.
Rule metadata and linked tags
Author: Li Ling, Andy Parkidomo, Robert Rakowski, Blake Hartstein (Bloomberg L.P.). Source status: test; severity: high. Source dates: 2024-09-02 / not supplied.
{
"category": "process_creation",
"product": "linux"
}Pinned original Sigma rule · Detection Rule License 1.1
Source SHA-256: e2f8ca06e33d13990fd9866031115a591ce153d70d6965f7f0ed248689b08094
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: Capsh Shell Invocation - Linux
id: db1ac3be-f606-4e3a-89e0-9607cbe6b98a
status: test
description: |
Detects the use of the "capsh" utility to invoke a shell.
references:
- https://gtfobins.github.io/gtfobins/capsh/#shell
- https://www.elastic.co/guide/en/security/current/linux-restricted-shell-breakout-via-linux-binary-s.html
author: Li Ling, Andy Parkidomo, Robert Rakowski, Blake Hartstein (Bloomberg L.P.)
date: 2024-09-02
tags:
- attack.execution
- attack.t1059
logsource:
category: process_creation
product: linux
detection:
selection:
Image|endswith: '/capsh'
CommandLine|endswith: ' --'
condition: selection
falsepositives:
- Unknown
level: high
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, live simulation result or validated detector is asserted. Source mappings and validation limits are preserved. ATT&CK / Atomic provenance · Detection provenance.