Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0a403013d83e03a3…

MALICIOUS

Office (OLE) / .DOCX

223.7 KB Created: 2020-08-28 23:46:00 Authoring application: Microsoft Office Word
MD5: 1626dac410af4d15d5f9e56f605f2bd3 SHA-1: a5deff7ea608c9d6fd685be06d74f68cac68af72 SHA-256: 0a403013d83e03a3a614efe358261cc348c747ff93142186423f800392d708c4
202 Risk Score

Malware Insights

Emotet · confidence 95%

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 auto-execution macro. Heuristics indicate the use of CreateObject and p-code execution, consistent with malware downloaders. The ClamAV detection name 'Doc.Downloader.EmotetRed02226-9938639-0' strongly suggests the Emotet family and a downloader function. The VBA script, though heavily obfuscated, likely attempts to download and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02226-9938639-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02226-9938639-0
  • 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
5595e6c0d2ff6a9d8ee2134dd1e3bb4a2dcb47ef9257ab221c8d3c1bd748ec49		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16072 bytes

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