Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 7498b21364e99a9f…

MALICIOUS

Office (OLE) / .DOCX

256.5 KB Created: 2020-10-29 06:41:00 Authoring application: Microsoft Office Word
MD5: f3dad657fa554c6166fc609a962f0159 SHA-1: 350a6764d85f88c949062ba098320fc6f8cbf914 SHA-256: 7498b21364e99a9f41ca8414bc33c36b69e7979a64cff519509d03c3b420be5b
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 is a Microsoft Office document containing a VBA macro that is automatically executed when the document is opened, as indicated by the 'Document_Open' heuristic. The ClamAV detection name 'Doc.Downloader.EmotetRed02224-9938637-0' strongly suggests the Emotet family and a downloader functionality. The VBA script itself appears obfuscated but the presence of 'CreateObject' and the overall structure are consistent with Emotet's typical behavior of downloading and executing additional 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
3a8074405c54d9e6984963caa3cafcf4e8c3b540e24ba2ba0a45964d8f0aaa49		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18973 bytes

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