Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5c78cad83b660dcd…

MALICIOUS

Office (OLE) / .DOCX

191.9 KB Created: 2020-10-01 13:24:00 Authoring application: Microsoft Office Word
MD5: 58d23664205fd766a6fc5df0960bdc95 SHA-1: a78105743663dd06471b779b3ad60a0ec5bd5f69 SHA-256: 5c78cad83b660dcdcd61dc5d927c88f2545ccd2ce958930d7291eb40d8ec088b
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The sample contains a VBA macro that is automatically executed upon opening the document, as indicated by the Document_Open heuristic. The macro is heavily obfuscated, but the presence of CreateObject calls and the ClamAV detection for 'Doc.Downloader.Emotet' strongly suggest it functions as a downloader for a second-stage payload. The obfuscated VBA code and the Emotet family attribution point to a malicious document designed for initial compromise.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9770099-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9770099-0
  • 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
036fd4509daa7ddddbb4b351244a67d134d9405ade9668761579d4b986a83b62		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10439 bytes

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