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

Static analysis result for SHA-256 7a087796ba52981d…

MALICIOUS

Office (OLE) / .DOCX

175.7 KB Created: 2020-09-17 20:07:00 Authoring application: Microsoft Office Word
MD5: e2d8c42bb24880ac6afa15749fddeb0b SHA-1: e1c62f20d374afa165b13a5aa0e6559a4e74fc19 SHA-256: 7a087796ba52981da1f8e06f79b5bd1bdebeb961afe1f01af7864edfe071712e
202 Risk Score

Malware Insights

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

The sample is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject. This indicates an attempt to execute 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. While the specific download URL is not directly evident, the presence of VBA macros and the downloader heuristic point to a malicious document, likely delivered via spearphishing.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9763054-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763054-0
  • 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
620e9eb15c32ed012e3e43742d6a5833fa906ea09e2bf7ca9f4f384d7210c8d6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21992 bytes

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