Using SettingSyncHost.exe as LOLBin — Sigma Rule

Rule metadata and linked tags

Author: Anton Kutepov, oscd.community. Source status: test; severity: high. Source dates: 2020-02-05 / 2021-11-27.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 3733ee17485c07d04f18ad2238d20d1d7bd2bceabda3948058f0d0b99f8d6810

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: Using SettingSyncHost.exe as LOLBin
id: b2ddd389-f676-4ac4-845a-e00781a48e5f
status: test
description: Detects using SettingSyncHost.exe to run hijacked binary
references:
    - https://www.hexacorn.com/blog/2020/02/02/settingsynchost-exe-as-a-lolbin
author: Anton Kutepov, oscd.community
date: 2020-02-05
modified: 2021-11-27
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.execution
    - attack.stealth
    - attack.t1574.008
logsource:
    category: process_creation
    product: windows
detection:
    system_utility:
        Image|startswith:
            - 'C:\Windows\System32\'
            - 'C:\Windows\SysWOW64\'
    parent_is_settingsynchost:
        ParentCommandLine|contains|all:
            - 'cmd.exe /c'
            - 'RoamDiag.cmd'
            - '-outputpath'
    condition: not system_utility and parent_is_settingsynchost
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://www.hexacorn.com/blog/2020/02/02/settingsynchost-exe-as-a-lolbin