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

Static analysis result for SHA-256 07cac58fbfac34bd…

MALICIOUS

Office (OLE) / .DOCX

185.3 KB Created: 2020-10-30 04:19:00 Authoring application: Microsoft Office Word
MD5: 704cb4d4ba7403a7cc951df8032bcbbd SHA-1: f4153f53198618841125bc89b6de100d88ce946a SHA-256: 07cac58fbfac34bd4e22b0dab98273a45a147dac7d38266ec0749fb5fd85b98d
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 an attempt to execute arbitrary code upon opening. The ClamAV detection as 'Doc.Malware.Emotet-9785300-0' strongly suggests a known malware family, likely Emotet, which commonly uses this technique to download further malicious payloads. The obfuscated nature of the VBA code and the presence of the 'macros.bas' artifact further support this. The embedded URL was confirmed benign and is likely a schema reference.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9785300-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9785300-0
  • 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
f7e154fbc1687723523f4f201e3a1591c84897657fe14056a01af3060d347cbe		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 17509 bytes

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