Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 7a3d1a1ea7fa1c84…

MALICIOUS

Office (OLE) / .DOC

162.8 KB Created: 2020-09-18 04:35:00 Authoring application: Microsoft Office Word
MD5: 9a5b6db3858f60fb44cdbc4ae01632b0 SHA-1: 8f7190f88c2f3d574ff260eabcc995785b53cb1a SHA-256: 7a3d1a1ea7fa1c840022e1d69af11f440dd482027e7fd505094829461d315c50
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a Microsoft Word document containing VBA macros, specifically a Document_Open macro designed to execute code upon opening. Heuristics indicate the use of CreateObject and p-code execution, consistent with Emotet malware. The ClamAV detection explicitly names Emotet. The VBA script, though obfuscated, appears to be part of a downloader mechanism.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9763318-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9763318-0
  • 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
b0a943f27b229afc0d61565177642c9be098ce97924ee703fbff1ec25a707666
vba-macro oletools.olevba.extract_macros (decoded VBA source) 21996 bytes