Writing Local Admin Share — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: medium. Source dates: 2022-01-01 / 2022-08-13.

{
  "product": "windows",
  "category": "file_event"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 3c40cb4e86a006fd8f7d60bd5427188df15c56eb2a7aa3c838026905d45f606c

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: Writing Local Admin Share
id: 4aafb0fa-bff5-4b9d-b99e-8093e659c65f
status: test
description: |
    Aversaries may use to interact with a remote network share using Server Message Block (SMB).
    This technique is used by post-exploitation frameworks.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1021.002/T1021.002.md#atomic-test-4---execute-command-writing-output-to-local-admin-share
author: frack113
date: 2022-01-01
modified: 2022-08-13
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.lateral-movement
    - attack.t1546.002
logsource:
    product: windows
    category: file_event
detection:
    selection:
        TargetFilename|contains|all:
            - '\\\\127.0.0'
            - '\ADMIN$\'
    condition: selection
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1021.002/T1021.002.md#atomic-test-4---execute-command-writing-output-to-local-admin-share