Malicious Office (OOXML) / .XLSX — malware analysis report

Static analysis result for SHA-256 21b0304bca382925…

MALICIOUS

Office (OOXML) / .XLSX

12.6 KB Created: 2026-06-11 17:17:50 UTC Authoring application: Microsoft Excel 16.0300 First seen: 2026-06-12
MD5: 84013fc1644f216529cf2061d1feb33a SHA-1: eba49270c65d5be7b65f4c410485cb3823d529dc SHA-256: 21b0304bca382925e422e70e236f7f5790c5b9ed5e09976558f53de16600a4da
190 Risk Score

Heuristics 6

  • VBA project inside OOXML medium 4 related findings OOXML_VBA
    Document contains a VBA project — VBA macros present
  • Potential Shell call in VBA critical OLE_VBA_SHELL
    Potential Shell call in VBA
    Matched line in script
        Shell shellCommand, vbHide
  • PowerShell reference in VBA critical OLE_VBA_PS
    PowerShell reference in VBA
    Matched line in script
        shellCommand = "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -Command """ & psScript & """"
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Triggers on the COMBINATION of two tokens co-occurring in the same compiled VBA/cache stream: an auto-execution entry point (Auto_Open / AutoOpen / Document_Open / Workbook_Open / Auto_Close / AutoClose) AND a shell/download/object-execution token (Shell, CreateObject, GetObject, PowerShell, cmd.exe, URLDownloadToFile, WinHttp, XMLHTTP, ADODB.Stream, ShellExecute, ExecuteExcel4Macro). Neither token alone fires it — it is the pairing that flags p-code-only or source-extraction-failure macro documents where the visible VBA source is unavailable. The matched tokens are named in the detail line below.
  • Workbook_Open macro low OLE_VBA_WBOPEN
    Workbook_Open macro
    Matched line in script
    Private Sub Workbook_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 https://www.tiktok.com/@astro_edlts/video/7648029283708865806?_r=1&_t=ZN-977LBUAUjby In document text (OOXML body / shared strings)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 1866 bytes
SHA-256: d15b68b6f903ee02e2045138defddf92ea0ddc9914cd2fcbfafbdf046c9c7cff
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Module1"
Private Sub Workbook_Open()
    Dim psScript As String
    Dim shellCommand As String
    
    ' PowerShell-kommandoen som åpner den spesifikke TikTok-linken
    psScript = "Start-Process 'https://www.tiktok.com/@astro_edlts/video/7648029283708865806?_r=1&_t=ZN-977LBUAUjby'"
    
    ' Bygger den endelige shell-kommandoen
    ' -WindowStyle Hidden gjør at selve PowerShell-vinduet holdes usynlig
    shellCommand = "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -Command """ & psScript & """"
    
    ' Kjører kommandoen i bakgrunnen (vbHide)
    Shell shellCommand, vbHide
End Sub

Attribute VB_Name = "ThisWorkbook"
Attribute VB_Base = "0{00020819-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True
Private Sub Workbook_Open()
    Dim psScript As String
    Dim shellCommand As String
    
    ' PowerShell-kommandoen som åpner den spesifikke TikTok-linken
    psScript = "Start-Process 'https://www.tiktok.com/@astro_edlts/video/7648029283708865806?_r=1&_t=ZN-977LBUAUjby'"
    
    ' Bygger den endelige shell-kommandoen
    ' -WindowStyle Hidden gjør at selve PowerShell-vinduet holdes usynlig
    shellCommand = "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -Command """ & psScript & """"
    
    ' Kjører kommandoen i bakgrunnen (vbHide)
    Shell shellCommand, vbHide
End Sub

Attribute VB_Name = "Ark1"
Attribute VB_Base = "0{00020820-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True
vbaProject_00.bin vba-project OOXML VBA project: xl/vbaProject.bin 13312 bytes
SHA-256: f6b3d2f62642b5bb9856930fe84b6bb98c41880e4ab125f38b4d9430cd25059b

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