Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 6b865ef4ff2653d1…

MALICIOUS

Office (OLE) / .DOCX

205.2 KB Created: 2020-12-22 12:31:00 Authoring application: Microsoft Office Word
MD5: bec5bf5e0f96f34dff1bd63a169aefc0 SHA-1: 3644eb2f496d1d5cd705a2756c964ff05652d7bc SHA-256: 6b865ef4ff2653d141429f88dc0b8e77f14d9315c583a24169804ef1a619dbd4
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common Emotet infection vector. The ClamAV detection explicitly names Emotet. The VBA code is heavily obfuscated, but the presence of CreateObject and the Document_Open macro strongly suggest it's designed to download and execute a secondary payload. No specific download URLs were extracted, but the heuristic firings and ClamAV detection provide high confidence.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-10024800-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-10024800-0
  • 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
b223e36ca03f3aef1de34ece9213428b8c399a8d27f7650232938837efe41a69		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16333 bytes

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