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

Static analysis result for SHA-256 0804fcd4768e815c…

MALICIOUS

Office (OLE) / .DOCX

172.8 KB Created: 2020-09-17 10:17:00 Authoring application: Microsoft Office Word
MD5: d6fac3d20c2bbf6c3a3a7669b2ef2400 SHA-1: 89198e6c76d36efee26de03a10a56eed6358be5d SHA-256: 0804fcd4768e815cb1f55da211cb90a7aaae5ec655ecaeecd1d864069fa07569
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 malware delivery. The macro uses CreateObject to execute obfuscated code, strongly suggesting it attempts to download and run a secondary payload. The ClamAV detection as 'Doc.Downloader.Generic' further supports this conclusion. While the exact payload URL is not directly visible due to obfuscation, the overall pattern indicates 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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