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

Static analysis result for SHA-256 79144d6d13b065f9…

MALICIOUS

Office (OLE) / .DOCX

234.4 KB Created: 2020-10-28 21:52:00 Authoring application: Microsoft Office Word
MD5: 5e00746000da208ed156e32c795a98a1 SHA-1: 031c4a125c5505089758f9abf9e47ecbe8020593 SHA-256: 79144d6d13b065f90df03aa72c81e9b96492fb861b5e5a46228133dd3994d35b
202 Risk Score

Malware Insights

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

The file is a Microsoft Word document containing VBA macros, specifically a Document_Open macro that uses CreateObject. This indicates an attempt to execute malicious code automatically when the document is opened. The ClamAV detection as 'Doc.Downloader.Generic' strongly suggests the macro's purpose is to download a secondary payload. No specific family could be identified, but the technique is consistent with spearphishing attachments.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9785156-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9785156-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • 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.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
5aa3aad97a35a46de04017100e8aadce01daec323c971d220dcadfd4335841c1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18882 bytes

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