Suspicious Created Files by Microsoft Sync Center (via file_event)

title: Suspicious Created Files by Microsoft Sync Center (via file_event)
id: 030ee562-2dbb-52f1-b38c-0b62e42c536e
status: stable
description: This rule detects this rule detects anomalous files created by Microsoft Sync Center (mobsync)
references:
    - https://attack.mitre.org/techniques/T1218/
    - https://attack.mitre.org/techniques/T1055/
    - https://redcanary.com/blog/intelligence-insights-november-2021/
author: Huntrule Team
date: 2026-06-28
tags:
    - attack.privilege-escalation
    - attack.stealth
    - attack.t1055
    - attack.t1218
    - attack.execution
logsource:
    product: windows
    category: file_event
detection:
    selection_mobsync:
        Image|endswith: '\mobsync.exe'
    filter_created_file:
        TargetFilename|endswith:
            - '.dll'
            - '.exe'
    condition: selection_mobsync and filter_created_file
falsepositives:
    - Unknown
level: medium