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Detection rules › Sigma

Linux Doas Tool Execution

Status
stable
Severity
low
Log source
category process_creation, product linux
Author
Sittikorn S, Teoderick Contreras
Source
github.com/SigmaHQ/sigma

Detects the doas tool execution in linux host platform. This utility tool allow standard users to perform tasks as root, the same way sudo does.

Known false positives

  • Unlikely

MITRE ATT&CK coverage

TacticTechniques
Privilege Escalation

Telemetry coverage

PlatformRecord / event type
LinuxEvent ID 1: Process Create

Rule body

title: Linux Doas Tool Execution
id: 067d8238-7127-451c-a9ec-fa78045b618b
status: stable
description: Detects the doas tool execution in linux host platform. This utility tool allow standard users to perform tasks as root, the same way sudo does.
references:
    - https://research.splunk.com/endpoint/linux_doas_tool_execution/
    - https://www.makeuseof.com/how-to-install-and-use-doas/
author: Sittikorn S, Teoderick Contreras
date: 2022-01-20
tags:
    - attack.privilege-escalation
    - attack.t1548
logsource:
    product: linux
    category: process_creation
detection:
    selection:
        Image|endswith: '/doas'
    condition: selection
falsepositives:
    - Unlikely
level: low

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    Image|endswith: '/doas'

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
Imageends_with
  • /doas
field:"Image" kind:ends_with value:"/doas"