Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 097234279d3321c5…

MALICIOUS

Office (OLE) / .DOCX

155.8 KB Created: 2020-12-30 13:16:00 Authoring application: Microsoft Office Word
MD5: f9fe0730f53959422b1a8b115a2ce6d2 SHA-1: 43587df556cc2895bd3c4d61e8599382e5e88bf8 SHA-256: 097234279d3321c5af9e943ee4171b8b30258cc924fa909d3219fc21f69aa4e6
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The sample is a Microsoft Office document with a high-confidence detection for VBA macros, specifically a Document_Open macro that executes upon file opening. The VBA code uses CreateObject to interact with the file system, creating temporary files with seemingly random names. This behavior, combined with the ClamAV detection signature 'Doc.Downloader.EmotetRed02224-9938637-0', strongly suggests that the macro's primary purpose is to download and execute a secondary payload, a common characteristic of Emotet malware.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
56a4885fb35696e61eb89c4193c6dbd09786b2db28cac633c3290a9c612d3393		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6670 bytes

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