Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 778c2b97449426c3…

MALICIOUS

Office (OLE) / .DOCX

238.5 KB Created: 2020-10-28 10:47:00 Authoring application: Microsoft Office Word
MD5: 0558c0d370cf05f6c5841651a790c610 SHA-1: 84859335972b444d93928f0dc92f21a23b4d995e SHA-256: 778c2b97449426c3f3827a8041a05fcbb0e648267612cde21370c9f152bcf255
202 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 that uses CreateObject, indicating malicious intent. ClamAV detection confirms this, identifying it as Emotet. The VBA script appears to be obfuscated but its structure suggests it attempts to download and execute a second-stage payload. The presence of VBA macros and the Document_Open auto-execution point to a spearphishing attachment delivery method.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9784450-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9784450-1
  • 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
46faaf06a16ada9e49d018565258705c67fc1202bb8b7fa1b6772e3ca9589e8c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 17107 bytes

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