Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 6b0b93d53659b4ab…

MALICIOUS

Office (OLE) / .DOCX

201.4 KB Created: 2020-09-25 06:51:00 Authoring application: Microsoft Office Word
MD5: 6d5cca20565f0edc14b04da59a0e7e24 SHA-1: b6ab1fb15e8c55271c49416f16b7901457b1959c SHA-256: 6b0b93d53659b4ab0a554d48e697c69e496374b1d8c32c440042c60a7e36c766
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, including a Document_Open macro, which is a common technique for Emotet. The ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet-9767804-1'. The VBA code appears to be obfuscated, but the presence of CreateObject and the Document_Open auto-execution strongly suggest it's designed to download and execute a secondary payload. The DOC BODY content is highly obfuscated and appears to be an attempt to disguise executable code.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9767804-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9767804-1
  • 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
d802c65eb8f9df036cf46e9408744e30c5d95dae54b582b9f65ecb84ecb28fa8		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25261 bytes

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