Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 0a430db8f97c8536…

MALICIOUS

Office (OLE) / .DOC

182.7 KB Created: 2019-12-20 19:40:00 Authoring application: Microsoft Office Word
MD5: cde295163f5aa6206de666a6b7e3764e SHA-1: e6b664bb84f21218483239de8ba276632bff4a95 SHA-256: 0a430db8f97c853692ab17929306a7a3ac9523448c878e51c0fe7a1665833f24
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a malicious OLE document containing VBA macros. The 'Document_open' macro is present and configured to execute upon opening, as indicated by the 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristic. The ClamAV detection explicitly names this as 'Doc.Downloader.Emotet-7473714-0', strongly suggesting the Emotet family and a downloader functionality. The VBA code itself is heavily obfuscated with meaningless variable names and loops, a common tactic for Emotet downloaders to evade static analysis.

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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