Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 1365a75650ecfa28…

MALICIOUS

Office (OLE) / .DOCX

161.9 KB Created: 2020-09-24 14:59:00 Authoring application: Microsoft Office Word
MD5: 7af5f13666c89c43116c916623e72cfe SHA-1: 86e9dc564df8cb2b3a1b7d3a51d69e3f2cbd114f SHA-256: 1365a75650ecfa285830cb0cefee3f914deab037e2ca8d4a9efcc2243e2d7a77
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject. Heuristics and ClamAV detection strongly indicate the Emotet family. The VBA code is heavily obfuscated but appears to construct and execute a PowerShell command, likely to download and run a secondary payload.

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
478e525c35da71173721eac25da86734da83f0768f80b277d373c9cc7716a5ba		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 27607 bytes

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