Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 100ef3eaa20f4e6b…

MALICIOUS

Office (OLE) / .DOC

182.8 KB Created: 2019-12-20 19:40:00 Authoring application: Microsoft Office Word
MD5: 18c8448384e45f29ef5d7c25e189205a SHA-1: c0f3f9ebf5355ca77a28e79d5d3cf1cf2eded49d SHA-256: 100ef3eaa20f4e6bc17de7448e4352a84784d9d8ac61b930e401c587b13fcf60
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a malicious Office document containing a VBA macro. The critical ClamAV detection and high-severity heuristics for OLE_VBA_DOCOPEN and OLE_VBA_PCODE_AUTOEXEC_EXEC indicate that the Document_open macro is designed to execute obfuscated code. This is characteristic of Emotet, which often uses such macros to download and execute further stages.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-7473714-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-7473714-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
08c944f3b4cd9e1d22d5483e817d198340b20aa35870bbb767208a62059a47fd		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 7575 bytes

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