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

Static analysis result for SHA-256 044fbfe6a7af7880…

MALICIOUS

Office (OLE) / .DOCX

194.5 KB Created: 2020-10-22 20:29:00 Authoring application: Microsoft Office Word
MD5: 29c40035dc208e6f23283a4d0d83e6f8 SHA-1: 047d14bd8552ad7a730f857f8670bfec90a0f6f3 SHA-256: 044fbfe6a7af7880a4a79b11351a8b657219c5717280368151dc6564e7b81715
202 Risk Score

Malware Insights

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

The file is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject. This indicates an attempt to execute arbitrary code upon opening. The ClamAV detection 'Doc.Downloader.Logan-9781905-0' strongly suggests a downloader family. The VBA script itself is heavily obfuscated, but the presence of auto-execution macros and the downloader heuristic point to a malicious intent to fetch and run additional payloads.

Heuristics 6

  • ClamAV: Doc.Downloader.Logan-9781905-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Logan-9781905-0
  • 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
9ca879422c3203043eb02bf7332bfccca42d062c85606acaa47b14db718d1f57		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 22796 bytes

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