Suspicious SyncAppvPublishingServer Execution to Bypass Powershell Restriction (via ps_script)

This rule detects SyncAppvPublishingServer process execution which usually used by threat actors to bypass PowerShell execution restrictions.

SigmamediumWindowsv1

sigma

suspicious-syncappvpublishingserver-execution-to-bypass-powershell-restriction-via-ps-script

title: Suspicious SyncAppvPublishingServer Execution to Bypass Powershell Restriction (via ps_script)
id: 07e394c7-0031-5331-8f6d-04dbb8e16442
status: stable
description: This rule detects SyncAppvPublishingServer process execution which usually used by threat actors to bypass PowerShell execution restrictions.
references:
    - https://attack.mitre.org/techniques/T1218/
    - https://lolbas-project.github.io/lolbas/Binaries/Syncappvpublishingserver/
author: 'Huntrule Team'
date: 2026-05-20
tags:
    - attack.stealth
    - attack.t1218
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection:
        ScriptBlockText|contains: 'SyncAppvPublishingServer.exe'
    condition: selection
falsepositives:
    - Unknown
level: medium

Known false positives

Unknown

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.