Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 77eb4c7120067d48…

MALICIOUS

Office (OLE) / .DOCX

168.0 KB Created: 2020-10-26 10:57:00 Authoring application: Microsoft Office Word
MD5: 124ea71bc7321e57fa7b9965e10b12b7 SHA-1: 8566f69fc54fd29b6750c99b63c0184e7c9833ac SHA-256: 77eb4c7120067d48b4170418e4b3e3fc183c4164d4d4fd4986b52e67c27cf5e9
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a malicious Office document containing VBA macros, specifically a Document_Open auto-execution macro. Heuristics indicate the use of CreateObject and p-code execution, strongly suggesting the execution of arbitrary code. ClamAV detection confirms this as Emotet, a known downloader. The VBA script, though heavily obfuscated, is designed to download and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9783962-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9783962-0
  • 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
73da4e56546636c0246d24a128ee097e3f12e124f4b51048532455144fb1d70c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15915 bytes

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