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

Static analysis result for SHA-256 1124cec9996bce15…

MALICIOUS

Office (OLE) / .DOCX

192.4 KB Created: 2020-09-18 12:16:00 Authoring application: Microsoft Office Word
MD5: c5c81400e950a1cc8f0fbd0f3a7a85e4 SHA-1: 5753dab6b1d9ba6d8fd0ae71d4cc7d9b92be950c SHA-256: 1124cec9996bce15f2c44d62cc624b00c3f2986dc98a88741048f868472ddf27
202 Risk Score

Malware Insights

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

The sample is a Microsoft Word document with a high-confidence detection for VBA macros, specifically a Document_Open macro that uses CreateObject. This indicates the macro is designed to execute automatically when the document is opened. The ClamAV detection 'Doc.Downloader.Generic-9763532-0' further supports that this is a downloader. No specific URLs or network indicators were extracted, but the presence of the Document_Open macro and the downloader heuristic strongly suggests an intent to fetch and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9763532-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763532-0
  • 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
ba8241e4388725ade491e6e42da3e5f9cf169555b4f6e61ff9f624691af3445f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20213 bytes

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