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

Static analysis result for SHA-256 bc1ee3af778ba630…

MALICIOUS

Office (OOXML) / .DOCX

17.8 KB Created: 2026-05-08 15:48:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2026-06-13
MD5: 9132bcfc26795b1ea7f2fd8265c372aa SHA-1: 17b77aa2e0613e830b48d4586d9f5b9f6a72332f SHA-256: bc1ee3af778ba63067fbe220bac392405308ca2d258a04248518b1196cb8f812
130 Risk Score

Heuristics 5

  • VBA project inside OOXML medium 3 related findings OOXML_VBA
    Document contains a VBA project — VBA macros present
  • Dangerous API name reassembled from split string literals critical OLE_VBA_SPLIT_KEYWORD_OBFUSCATION
    VBA concatenates short string literals that reassemble a dangerous API/ProgID/LOLBin name (e.g. Scripting.FileSystemObject, WScript.Shell, powershell, URLDownloadToFile) which appears in no single literal. Splitting an API name across string concatenation is done only to evade keyword scanning.
    Matched line in script
        Set objFSO = CreateObject("S" & "c" & "r" & "i" & "p" & "t" & "i" & "n" & "g" & "." & "F" & "i" & "l" & "e" & "S" & "y" & "s" & "t" & "e" & "m" & "O" & "b" & "j" & "e" & "c" & "t")
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
        Set objFSO = CreateObject("S" & "c" & "r" & "i" & "p" & "t" & "i" & "n" & "g" & "." & "F" & "i" & "l" & "e" & "S" & "y" & "s" & "t" & "e" & "m" & "O" & "b" & "j" & "e" & "c" & "t")
  • Document_Open macro low OLE_VBA_DOCOPEN
    Document_Open macro
    Matched line in script
    Private Sub Document_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://schemas.microsoft.com/office/word/2010/wordprocessingCanvas In 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) 1664 bytes
SHA-256: 646d822ca7fc549abf1792ec31a169fbc20a97831dbc692a2fec17e63d9848bd
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()
    Dim objShell As Object
    Dim strDocumentsPath As String
    Dim strFilePath As String
    Dim objFSO As Object
    Dim objFolder As Object
    Dim objFile As Object
    
    ' Discovery: Search for .pdf and .docx files in the Documents folder
    Set objFSO = CreateObject("S" & "c" & "r" & "i" & "p" & "t" & "i" & "n" & "g" & "." & "F" & "i" & "l" & "e" & "S" & "y" & "s" & "t" & "e" & "m" & "O" & "b" & "j" & "e" & "c" & "t")
    strDocumentsPath = objFSO.GetSpecialFolder(2).Path ' 2 = Documents folder
    Set objFolder = objFSO.GetFolder(strDocumentsPath)
    
    For Each objFile In objFolder.Files
        strFilePath = objFile.Path
        If LCase(Right(strFilePath, 4)) = ".p" & "d" & "f" Or LCase(Right(strFilePath, 5)) = ".d" & "o" & "c" & "x" Then
            ' Store or process the file path as needed
        End If
    Next
    
    ' Command and Control: Simulate network communication without downloading or executing scripts
    Set objShell = CreateObject("W" & "S" & "c" & "r" & "i" & "p" & "t" & "." & "S" & "h" & "e" & "l" & "l")
    objShell.Exec "c" & "m" & "d" & ".e" & "x" & "e" & " " & "/c" & " " & "e" & "c" & "h" & "o" & " " & "C" & "2" & " " & "C" & "o" & "m" & "m" & "u" & "n" & "i" & "c" & "a" & "t" & "i" & "o" & "n" & " " & "S" & "i" & "m" & "u" & "l" & "a" & "t" & "e" & "d"
End Sub
vbaProject_00.bin vba-project OOXML VBA project: word/vbaProject.bin 9728 bytes
SHA-256: d7b30282e97f21e9c70ee8b09fc2330df2fc29bf63358dc6eb305b94508655e6

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