Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0df824f36e56dbf8…

MALICIOUS

Office (OLE) / .DOCX

252.4 KB Created: 2020-09-17 19:06:00 Authoring application: Microsoft Office Word
MD5: 9aab6dafb2178673957836d63377497f SHA-1: db92b775771ec8d82d8355ae87c93c6baebff926 SHA-256: 0df824f36e56dbf8febc5fcb22a4017bd18feb908d157a5761754b81776f74ab
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 auto-execution macro, which is a common technique for Emotet. The ClamAV detection name 'Doc.Downloader.EmotetRed02226-9938639-0' strongly suggests the Emotet family and its downloader functionality. The VBA code attempts to construct a string from concatenated parts, likely to obfuscate a URL or command for downloading a secondary payload.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02226-9938639-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02226-9938639-0
  • 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
f3e5512d27b8b9bc41f3042e7c20b3a4762b4069585ccb21c6a950e8fd05377a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21986 bytes

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