sigmamediumHunting

Created Files by Microsoft Sync Center

This rule detects suspicious files created by Microsoft Sync Center (mobsync)

MITRE ATT&CK

privilege-escalationexecutiondefense-evasion

Detection Query

selection_mobsync:
  Image|endswith: \mobsync.exe
filter_created_file:
  TargetFilename|endswith:
    - .dll
    - .exe
condition: selection_mobsync and filter_created_file

Author

elhoim

Created

2022-04-28

Data Sources

windowsFile Events

Platforms

windows

References

https://redcanary.com/blog/intelligence-insights-november-2021/

Tags

attack.privilege-escalationattack.t1055attack.t1218attack.executionattack.defense-evasion

Raw Content

title: Created Files by Microsoft Sync Center
id: 409f8a98-4496-4aaa-818a-c931c0a8b832
status: test
description: This rule detects suspicious files created by Microsoft Sync Center (mobsync)
references:
    - https://redcanary.com/blog/intelligence-insights-november-2021/
author: elhoim
date: 2022-04-28
modified: 2022-06-02
tags:
    - attack.privilege-escalation
    - attack.t1055
    - attack.t1218
    - attack.execution
    - attack.defense-evasion
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