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

Static analysis result for SHA-256 64391214b0c653ee…

MALICIOUS

Office (OLE) / .DOCX

164.7 KB Created: 2020-12-29 08:56:00 Authoring application: Microsoft Office Word
MD5: 93f3d2c2094ee0282d7c03ca77db8683 SHA-1: 36f7b2acac635a25e34b4fb122196822973bd5da SHA-256: 64391214b0c653eee052ee6002b08285719f04d563e2000dc6f82579923c3867
202 Risk Score

Malware Insights

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

The sample contains a VBA macro that is automatically executed upon opening the document, as indicated by the Document_Open and OLE_VBA_PCODE_AUTOEXEC_EXEC heuristics. The script attempts to read from and write to local file paths, suggesting it is involved in downloading and executing a second-stage payload. The ClamAV detection as 'Doc.Downloader.EmotetRed02224-9938637-0' further supports this downloader behavior.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
3e142f8f1ec045a49f005a6e1f22483ffd9a4a3fba2276e438481e79de80b3fc		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 8366 bytes

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