Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 746113af0253d117…

MALICIOUS

Office (OLE) / .DOCX

191.4 KB Created: 2020-10-01 13:24:00 Authoring application: Microsoft Office Word
MD5: 38794b708aadf1559a90114622ca36cf SHA-1: 43956f79215e557945b5179488f4c255e1131c35 SHA-256: 746113af0253d11772b82c935ec29f4686e5a6ad13798afc399e00556208bc24
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 auto-execution macro, which is a common Emotet infection vector. The macro is heavily obfuscated but the presence of `CreateObject` and the ClamAV detection signature 'Doc.Downloader.Emotet' strongly indicate it functions as a downloader for a secondary payload. The embedded URL `http://schemas.openxmlformats.org/drawingml/2006/main` was confirmed benign and is likely a false positive or part of the obfuscation.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9770099-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9770099-0
  • 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
036fd4509daa7ddddbb4b351244a67d134d9405ade9668761579d4b986a83b62		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10439 bytes

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