SyncAppvPublishingServer VBS Execute Arbitrary PowerShell Code

Hunt Hypothesis

Executes arbitrary PowerShell code using SyncAppvPublishingServer.vbs

Detection Rule

Sigma (Original)

title: SyncAppvPublishingServer VBS Execute Arbitrary PowerShell Code
id: 36475a7d-0f6d-4dce-9b01-6aeb473bbaf1
status: test
description: Executes arbitrary PowerShell code using SyncAppvPublishingServer.vbs
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1216/T1216.md
    - https://lolbas-project.github.io/lolbas/Binaries/Syncappvpublishingserver/
author: frack113
date: 2021-07-16
modified: 2022-06-22
tags:
    - attack.stealth
    - attack.t1218
    - attack.t1216
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - '\SyncAppvPublishingServer.vbs'
            - ';'  # at a minimum, a semi-colon is required
    condition: selection
falsepositives:
    - Unknown
level: medium

KQL (Azure Sentinel)

imProcessCreate
| where TargetProcessCommandLine contains "\\SyncAppvPublishingServer.vbs" and TargetProcessCommandLine contains ";"

Required Data Sources

False Positive Guidance

• Unknown

MITRE ATT&CK Context

• Technique: T1218 — T1218
• Technique: T1216 — T1216

References

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1216/T1216.md
• https://lolbas-project.github.io/lolbas/Binaries/Syncappvpublishingserver/
• SigmaHQ Rule