Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 684d538530f60953…

MALICIOUS

Office (OLE) / .DOCX

151.6 KB Created: 2020-09-22 07:23:00 Authoring application: Microsoft Office Word
MD5: 20e1d20e344e4067d45a0522255374ee SHA-1: 99dc7bbe309d9f5d240eec6737e849ed42a42c45 SHA-256: 684d538530f6095356b8290993e828154398388f70e1ea9fbf5b6082ef911cbc
242 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, specifically a Document_Open macro, which is a common technique for Emotet. The ClamAV detection also explicitly identifies it as Emotet. The macro's obfuscated nature and use of CreateObject/GetObject suggest it's designed to download and execute a secondary payload. The presence of the 'macros.bas' file is a direct indicator of this malicious macro execution.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9765070-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765070-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
37ce3f491be0f3d0a753fc5c7339c798cd89a6843cff6094a48ab180ad94ccb1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16563 bytes

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