Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 1632ea7fdf8e7ab9…

MALICIOUS

Office (OLE) / .DOCX

167.3 KB Created: 2020-09-24 20:34:00 Authoring application: Microsoft Office Word
MD5: a30d27c9de41f4c6714e7a68388f9b36 SHA-1: 7681b14f040039ed03171176dd8163acb9934406 SHA-256: 1632ea7fdf8e7ab955b1357fe5640e06aadcfb91202f35eba24bcff15b298b3d
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 contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating an attempt to execute code upon opening. The ClamAV detection explicitly names this as 'Doc.Downloader.Emotet-9765780-0', strongly suggesting the Emotet family and a downloader functionality. The obfuscated nature of the VBA code further supports the deobfuscation technique.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9765780-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765780-0
  • 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
20065c1f06a22de094d8fc279802a5adedc919206be7ae0d9cd9ee9d315ea30b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25868 bytes

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