Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 799de3c0b3c57093…

MALICIOUS

Office (OLE) / .DOC

175.0 KB Created: 2020-10-27 06:16:00 Authoring application: Microsoft Office Word
MD5: 4f0540e0074d1a13f488c0cceaab4c15 SHA-1: e5b6638786963f58767bcc9a85523ca839a1c810 SHA-256: 799de3c0b3c57093a424c4e80e471b26b7f7d121e6e4b75a250304ed59ab9d6f
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1204.002 Malicious File

The sample is a malicious OLE document containing VBA macros, specifically a Document_Open auto-execution macro. The VBA code utilizes CreateObject and appears to be heavily obfuscated, likely to download and execute a secondary payload. ClamAV detection confirms this as a downloader variant of Emotet.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9784225-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9784225-0
  • 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
0ecb57a82c821d2780c5d8fbaba7ca8e89abe712ef04f864aad716451a034710		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16103 bytes

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