Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 63d11b10d793151a…

MALICIOUS

Office (OLE) / .DOCX

132.1 KB Created: 2020-09-30 05:26:00 Authoring application: Microsoft Office Word
MD5: d85f19840d6856608ddf008b99d6957b SHA-1: 0ee4dd8bb6bc32383dea67ea1b54e81c6e5c1dd1 SHA-256: 63d11b10d793151af69aa10ba45dcd9de40ca61834d018e42474786090043655
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The sample is a Microsoft Office document containing a VBA macro that is automatically executed upon opening, as indicated by the Document_Open heuristic. The macro utilizes CreateObject to instantiate a COM object, a common technique for downloading and executing further malicious payloads. The ClamAV detection explicitly names this as an Emotet downloader, strongly suggesting the family and its typical behavior of fetching and running additional malware.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9769541-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9769541-0
  • 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
b2b495189d2eb2b89dce9719098105d933c1125fa9413aec5a7ff49e851b8844		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10579 bytes

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