Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 12820384810ee90b…

MALICIOUS

Office (OLE) / .DOCX

167.7 KB Created: 2020-09-14 11:57:00 Authoring application: Microsoft Office Word
MD5: 9c0ffab10497690031deb768c5bf000e SHA-1: 0b320b5caef4a03dd975b3c4e7553b1a0632a869 SHA-256: 12820384810ee90b5f51be5c13e6c2a8ca47e4266660b1e3100722e4c2baa33b
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The ClamAV detection and the presence of VBA code that likely downloads a second-stage payload, as suggested by the heuristic firings, point towards the Emotet family. The macro's obfuscated nature and the embedded URL, though benign, are typical of Emotet's download and execution behavior.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9762269-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9762269-0
  • 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
8a39fc8d6eec119bccb9074c742cbab236c89f429d1a306c2818d1568d873603		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25223 bytes

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