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

Static analysis result for SHA-256 76ec500ee8ac08b3…

MALICIOUS

Office (OLE) / .DOCX

266.0 KB Created: 2020-10-28 13:40:00 Authoring application: Microsoft Office Word
MD5: d9994341c2d287737e9e471a9d1210ec SHA-1: 687e2c27c2ba1e11bb91cd22a8eeb946a0713321 SHA-256: 76ec500ee8ac08b386df3fba782437637ef36d46c8b0082ce152cdd7bed864e3
202 Risk Score

Malware Insights

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

The sample is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject. This indicates a downloader or droppper functionality. The ClamAV detection 'Doc.Downloader.Generic-9785156-0' further supports this. The VBA code is heavily obfuscated, making it difficult to determine the exact payload or download URL.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9785156-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9785156-0
  • 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
04f0b14197f396c9b03f7b934599b1b01d62a486cd3090375b867094895917c9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18531 bytes

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