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

Static analysis result for SHA-256 18365907776159fc…

MALICIOUS

Office (OLE) / .DOCX

194.0 KB Created: 2020-10-22 20:29:00 Authoring application: Microsoft Office Word
MD5: d7fc0a9aa3377cbda1f84f96b74cdcfd SHA-1: c1dba5cec8ac32020a7928cf64f8cbadbddb3608 SHA-256: 18365907776159fcc1f022db0ded384511ec5b0e2a038c037b725d1c3b596bc8
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. ClamAV identifies this as 'Doc.Downloader.Logan-9781905-0', indicating it functions as a downloader. The VBA script is heavily obfuscated, but the presence of the Document_Open auto-execution macro and the CreateObject call strongly suggests it attempts to download and execute a second-stage payload.

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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