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

Static analysis result for SHA-256 14650f22ccd9ac8f…

MALICIOUS

Office (OLE) / .DOCX

172.2 KB Created: 2020-09-17 10:17:00 Authoring application: Microsoft Office Word
MD5: 84f6d98e98ca56b63209a7ee80d9e22d SHA-1: 5cea4b4a7989a73730c6329fd9ed346e99dd92b3 SHA-256: 14650f22ccd9ac8f4effcb6415afc3ee21a1a681e0d621888dd3e28a30e9e237
202 Risk Score

Malware Insights

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

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for initiating malicious actions upon opening the document. The macro uses CreateObject, indicating it's likely attempting to execute code or download a payload. The ClamAV detection as 'Doc.Downloader.Generic' further supports this, suggesting the file's primary purpose is to download and execute additional malware. The embedded URL is benign, but the macro's functionality points to a downloader.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9762674-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9762674-0
  • 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
9ba8ec3966e91d175acafd30ec3438df19c84a3d5c19c35fd5e40d1b639faa28		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20635 bytes

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