Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 6c1e317361243614…

MALICIOUS

Office (OLE) / .DOCX

154.7 KB Created: 2020-12-30 18:32:00 Authoring application: Microsoft Office Word
MD5: ad2187ea1b204e874a967148e4006c26 SHA-1: f6a6e237096a2d361570a546652aea23fb475421 SHA-256: 6c1e317361243614038a172a218b2050728fbcf3f6dc18937d02f92e1ff92354
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter

The sample is a malicious Office document containing VBA macros, specifically a Document_Open macro that executes obfuscated code. This code utilizes CreateObject to interact with the file system, attempting to create files with specific names and paths. The ClamAV detection and the nature of the macro execution strongly suggest it is part of the Emotet family, likely acting as a downloader for further malicious payloads.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
e8d3f7d8d02f0b30fe9a4f739a77064bdfd79f1fb249409f6cc7dd9e6c88bf62
vba-macro oletools.olevba.extract_macros (decoded VBA source) 6622 bytes