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

Static analysis result for SHA-256 d184268bf1ee860b…

MALICIOUS

Office (OOXML) / .DOCX

104.4 KB Created: 2020-05-01 22:22:00 UTC Authoring application: Microsoft Office Word 15.0000
MD5: 3df4759d030d0411223e88dec54f67ac SHA-1: e1db6b0ac6321a48c7902888687fa0390f0e85ad SHA-256: d184268bf1ee860b491b319eb7f96adcab1a9ea696ffb4c26449a60c33b7a9e3
140 Risk Score

Malware Insights

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

The OOXML document contains VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. The presence of CreateObject calls suggests the macro is designed to perform actions beyond simple document manipulation, likely downloading and executing a secondary payload. No specific family could be identified, and no external IOCs were extracted.

Heuristics 5

  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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.openxmlformats.org/markup-compatibility/2006
    • 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/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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
c5621f0252cfb673cdd7c213523eb57315599c96d610f84af8b295bf08001088		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 1286 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.
vbaProject_00.bin
a0b6a361ec17ba2dccfaff6d6c8b63d00f9eddd9d0bc25c5a128289de976e3c3		 vba-project OOXML VBA project: word/vbaProject.bin 10240 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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