Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 66c0e7ceb47c0d15…

MALICIOUS

Office (OLE) / .DOCX

153.1 KB Created: 2020-10-19 09:55:00 Authoring application: Microsoft Office Word
MD5: dacd7696b10a3355ff775159d8040e0a SHA-1: a13c200df388d7d5cf5bc1756cc03ebe405e19dc SHA-256: 66c0e7ceb47c0d152933178eafd5378aa9f4f4e48c5b7ab491e029370818cb4e
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The sample is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject, indicating an attempt to execute code. ClamAV detection confirms this as Doc.Downloader.Emotet. The VBA macro code is heavily obfuscated, but the presence of macro execution and the Emotet family attribution strongly suggest it's designed to download and execute a secondary payload. The embedded URL in the document body, though benign, is a common lure for such attacks.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9780434-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9780434-0
  • 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
1480f6f3dc12ae5544443e21682a29de409fc914bcdbfb39f5c72e71174c3bfb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15487 bytes

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