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

Static analysis result for SHA-256 61b104c81d6e07bc…

MALICIOUS

Office (OLE) / .DOCX

217.9 KB Created: 2020-09-21 20:39:00 Authoring application: Microsoft Office Word
MD5: d4103a1f0875f7106710a1cffce4e27a SHA-1: 1e7813fdc701dd7d8686cc4392d42ebe0813da7a SHA-256: 61b104c81d6e07bc38102631a844c6247bfb16ff720fc134b3a95d601df23fab
242 Risk Score

Malware Insights

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

The presence of a Document_Open macro and CreateObject/GetObject calls strongly indicates malicious VBA code designed to execute automatically. ClamAV also flagged this as a downloader. The VBA script appears to be heavily obfuscated, making it difficult to determine the exact payload or download URL, but the intent is clearly to fetch and run additional malware.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9764666-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764666-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
6d2f50f334b8e082813c694e310720d341c184a4af51360bc43b61318b8ab2c5		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19051 bytes

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