Potential Discovery Activity Using Find - Linux — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: medium. Source dates: 2022-12-28 / not supplied.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 507cdcdbab8ae4a151bccf2c2e4a69c72c6d27ddae062a567497e9b0a5276484

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: Potential Discovery Activity Using Find - Linux
id: 8344c0e5-5783-47cc-9cf9-a0f7fd03e6cf
related:
    - id: 85de3a19-b675-4a51-bfc6-b11a5186c971
      type: similar
status: test
description: Detects usage of "find" binary in a suspicious manner to perform discovery
references:
    - https://github.com/SaiSathvik1/Linux-Privilege-Escalation-Notes
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-12-28
tags:
    - attack.discovery
    - attack.t1083
logsource:
    category: process_creation
    product: linux
detection:
    selection:
        Image|endswith: '/find'
        CommandLine|contains:
            - '-perm -4000'
            - '-perm -2000'
            - '-perm 0777'
            - '-perm -222'
            - '-perm -o w'
            - '-perm -o x'
            - '-perm -u=s'
            - '-perm -g=s'
    condition: selection
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/SaiSathvik1/Linux-Privilege-Escalation-Notes