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

Static analysis result for SHA-256 d25b0e2a624f89a3…

MALICIOUS

Office (OOXML) / .DOC

71.9 KB Created: 2021-02-04 00:50:00 UTC Authoring application: Microsoft Office Word 16.0000
MD5: bab190f4093c347bf6717d608397f3ad SHA-1: 1ca4d3afcba51a4b4362f8cd2882563e3a9639b6 SHA-256: d25b0e2a624f89a3517504c62015f98174e980307b5a4b65b6b43928433f0f31
100 Risk Score

Malware Insights

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

The file is a malicious OOXML document containing VBA macros, specifically triggering a Document_Open macro. This macro likely uses GetObject calls to execute arbitrary code, a common technique for downloading and running second-stage payloads. The presence of VBA macros and the auto-execution upon opening strongly suggest a malicious intent, likely for initial access via phishing.

Heuristics 4

  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
  • VBA project inside OOXML medium OOXML_VBA
    Document contains vbaProject.bin — VBA macros present
  • 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
    • http://schemas.microsoft.com/office/drawing/2014/chartex
    • http://schemas.microsoft.com/office/drawing/2015/9/8/chartex
    • http://schemas.microsoft.com/office/drawing/2015/10/21/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/9/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/10/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/11/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/12/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/13/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/14/chartex
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.microsoft.com/office/drawing/2016/ink
    • http://schemas.microsoft.com/office/drawing/2017/model3d
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/officeDocument/2006/math
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
    • http://schemas.openxmlformats.org/wordprocessingml/2006/main
    • http://schemas.microsoft.com/office/word/2010/wordml
    • http://schemas.microsoft.com/office/word/2012/wordml
    • http://schemas.microsoft.com/office/word/2016/wordml/cid
    • http://schemas.microsoft.com/office/word/2015/wordml/symex
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroup
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInk
    • http://schemas.microsoft.com/office/word/2006/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShape

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
4610311b7e11df15bb408625405f797e2a1194015631b52da26c7034d8aae0eb		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 3458 bytes
vbaProject_00.bin
ddc2bc8a0c0fdcfd1e35faac7847b222bc2dae06c7b543c9952245b6755d6f42		 vba-project OOXML VBA project: word/vbaProject.bin 13824 bytes
emf_00.emf
dba778e17b85f57857d849bd59862030c6d875cd59dd85b0c7977c6770595507		 ooxml-emf OOXML EMF part: word/media/image1.emf 241216 bytes

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