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

Static analysis result for SHA-256 5bcff88fb7e7145c…

MALICIOUS

Office (OLE) / .DOCX

213.2 KB Created: 2020-09-21 12:09:00 Authoring application: Microsoft Office Word
MD5: a06e9d8e88336b3d92b94f95c8861ea9 SHA-1: 469c543523ee6a85cbeb69319919fa240d1e053f SHA-256: 5bcff88fb7e7145c160caf05dd1eeaf462a13bcad2f037b87204026d0146a668
242 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, with a high-confidence heuristic indicating the presence of a Document_Open macro that uses CreateObject and GetObject. This suggests the macro is designed to execute automatically when the document is opened. The ClamAV detection as 'Doc.Downloader.Generic' further supports the conclusion that this document is a downloader. No specific second-stage payload URL or execution command was directly extracted, but the overall behavior points to a downloader attempting to fetch and run additional malicious content.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9764508-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764508-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
cea30dbaa44bcaf57fbcd15c35be69cfffbad74d3b69c3addc059acf5ad797f9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19026 bytes

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