Unknown VBA Code

Hi,
I developed a spreadsheet for a friend that has a simple VBA code that highlights three sheets and prints them to a PDF (names the file based on a concatenated field). This week, I began updating it with a new 2020 price list and found the following code in the "RibbonX Code" module. I don't think I put it there, can anyone tell me what it's doing and more importantly if it's malicious?

Option Explicit
Const sResourcePrefix As String = "RES_"

'Get Culture
Private Function GetATPUICultureTag() As String
Dim shTemp As Worksheet
Dim sCulture As String
Dim sSheetName As String

sCulture = Application.International(xlUICultureTag)
sSheetName = sResourcePrefix + sCulture

On Error Resume Next
Set shTemp = ThisWorkbook.Worksheets(sSheetName)
On Error GoTo 0
If shTemp Is Nothing Then sCulture = GetFallbackTag(sCulture)

GetATPUICultureTag = sCulture
End Function

'Entry point for RibbonX button click
Sub ShowATPDialog(control As IRibbonControl)
Application.Run ("fDialog")
End Sub

'Callback for RibbonX button label
Sub GetATPLabel(control As IRibbonControl, ByRef label)
label = ThisWorkbook.Sheets(sResourcePrefix + GetATPUICultureTag()).Range("RibbonCommand").Value
End Sub

'Callback for screentip
Public Sub GetATPScreenTip(control As IRibbonControl, ByRef label)
label = ThisWorkbook.Sheets(sResourcePrefix + GetATPUICultureTag()).Range("ScreenTip").Value
End Sub

'Callback for Super Tip
Public Sub GetATPSuperTip(control As IRibbonControl, ByRef label)
label = ThisWorkbook.Sheets(sResourcePrefix + GetATPUICultureTag()).Range("SuperTip").Value
End Sub

Public Sub GetGroupName(control As IRibbonControl, ByRef label)
label = ThisWorkbook.Sheets(sResourcePrefix + GetATPUICultureTag()).Range("GroupName").Value
End Sub

'Check for Fallback Languages
Private Function GetFallbackTag(szCulture As String) As String
'Sorted alphabetically by returned culture tag, then input culture tag
Select Case (szCulture)
Case "rm-CH"
GetFallbackTag = "de-DE"
Case "ca-ES", "ca-ES-valencia", "eu-ES", "gl-ES"
GetFallbackTag = "es-ES"
Case "lb-LU"
GetFallbackTag = "fr-FR"
Case "nn-NO"
GetFallbackTag = "nb-NO"
Case "be-BY", "ky-KG", "tg-Cyrl-TJ", "tt-RU", "uz-Latn-UZ"
GetFallbackTag = "ru-RU"
Case Else
GetFallbackTag = "en-US"
End Select
End Function

Thanks! I appreciate the help.
Ophiacus

I think you're right. It's in the "Funcres.xlam". Maybe it's not in this file and probably not something to worry about?