SyncAppvPublishingServer Execute Arbitrary PowerShell Code — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: medium. Source dates: 2021-07-12 / 2022-10-04.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 104988127719025e46f9064c592a56e570781347fa6c47f66c597568176d3c8b

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: SyncAppvPublishingServer Execute Arbitrary PowerShell Code
id: fbd7c32d-db2a-4418-b92c-566eb8911133
related:
    - id: fde7929d-8beb-4a4c-b922-be9974671667
      type: obsolete
status: test
description: Executes arbitrary PowerShell code using SyncAppvPublishingServer.exe.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md
    - https://lolbas-project.github.io/lolbas/Binaries/Syncappvpublishingserver/
author: frack113
date: 2021-07-12
modified: 2022-10-04
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\SyncAppvPublishingServer.exe'
        - OriginalFileName: 'syncappvpublishingserver.exe'
    selection_cli:
        CommandLine|contains: '"n; '
    condition: all of selection_*
falsepositives:
    - App-V clients
level: medium

Original YAML and metadata in JSON

False positives

• App-V clients

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md
• https://lolbas-project.github.io/lolbas/Binaries/Syncappvpublishingserver/