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

Static analysis result for SHA-256 0d2422f1dc3469f8…

MALICIOUS

Office (OLE) / .DOCX

180.4 KB Created: 2020-09-18 08:59:00 Authoring application: Microsoft Office Word
MD5: babf0c97830e54ecd211fa5f20dd45cd SHA-1: e81c4164de4dfdb5f56645f18c656601aef66475 SHA-256: 0d2422f1dc3469f81fe90675a2c0bddf49b9bdd9641fa05b47ea8a9d5a025b6f
202 Risk Score

Malware Insights

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

The file is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that executes automatically. Heuristics indicate the use of CreateObject and p-code execution, suggesting the macro's purpose is to download and execute a secondary payload. The ClamAV detection as 'Doc.Downloader.Generic' further supports this. No specific family could be identified, but the behavior is consistent with a downloader.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9763419-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763419-0
  • 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
2cacffa870bc163e0d80063dbad890b2628b581c624e40730ba57a6c44f2b3d2		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20834 bytes

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