Suspicious Writing Local Admin Share (via file_event)

title: Suspicious Writing Local Admin Share (via file_event)
id: b8d8fed4-b24e-597b-b66b-5ddbb519015f
status: stable
description: This rule detects aversaries may use to interact with a remote network share using Server Message Block (SMB). This method is used by post-exploitation frameworks.
references:
    - https://attack.mitre.org/techniques/T1546/002/
    - 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: Huntrule Team
date: 2026-05-23
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