Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 719114e7d0b7c1f6…

MALICIOUS

Office (OLE) / .DOCX

219.3 KB Created: 2020-08-27 19:13:00 Authoring application: Microsoft Office Word
MD5: 37e08043c37d9e4669fcafa14f518c97 SHA-1: b77bd439c15455525b53de910cbb8908529afd9d SHA-256: 719114e7d0b7c1f6fdc0a32e3b2092f4cb8f248e54d92dbe8643bcc71b42f8b7
262 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate or Obfuscate Malicious Code

The sample contains VBA macros, specifically a Document_Open macro, which is a common technique for Emotet. The critical heuristic 'VBA UserForm hidden-property command stager' indicates the macro is designed to execute obfuscated code, likely to download and run a secondary payload. The ClamAV detection name 'Doc.Downloader.EmotetRed02226-9938639-0' strongly suggests the Emotet family and its downloader functionality.

Heuristics 7

  • VBA UserForm hidden-property command stager critical OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER
    VBA auto-exec macro creates a COM object from a decoded variable and reconstructs command text through Split/Join and hidden UserForm properties such as ControlTipText, Tag, Pages, or HelpContextId. This is a high-confidence macro downloader/loader shape seen in the reviewed OLE set, but it is not an Office CVE exploit primitive.
  • 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
c8fa06fc63ee0918409e122c2c3190357ad554fe9675a98aa08416d8a7efb709		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10175 bytes

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