Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 05c767b8eb10af23…

MALICIOUS

Office (OLE) / .DOCX

209.1 KB Created: 2020-12-22 21:50:00 Authoring application: Microsoft Office Word
MD5: 7b187719d9d1598828b572d88010e2d2 SHA-1: 130e90f496b2a005e17258c8b12c5f836e389378 SHA-256: 05c767b8eb10af233636947b37552012edd704f98de99f200ed4774e8c9b736e
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 macro, which is a common technique for Emotet. The macro utilizes CreateObject to execute obfuscated code, likely to download and run a secondary payload. The ClamAV detection name 'Doc.Downloader.EmotetRed02224-9938637-0' further supports the Emotet family attribution and its downloader functionality.

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
b559ca2a4b6431779fe74d7481a6f916cab3c2b891432c5ee8c97f5a35ecea25		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15388 bytes

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