Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 5f6d8525a28494c7…

MALICIOUS

Office (OLE) / .DOC

192.3 KB Created: 2020-07-17 19:04:00 Authoring application: Microsoft Office Word
MD5: 9a54dfaab17777bb4236efed1576743c SHA-1: 06274d6d639104b9b565846d504dadd0b455ccd4 SHA-256: 5f6d8525a28494c7eda3df2fbb04bcacc9ec20abd2884a8e690d91a2de033807
262 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a malicious Microsoft Word document containing VBA macros. The critical heuristic 'OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER' and the presence of a 'Document_Open' macro indicate an attempt to automatically execute malicious code upon opening. The VBA script, though obfuscated, likely functions as a downloader for a second-stage payload, consistent with Emotet's typical behavior. The ClamAV detection further supports the Emotet family attribution.

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.Emotet-10022426-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-10022426-0
  • 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
53c97ab52c48e8cb44041423cc5605cce8f2245ba857021299aa65b70ab4db2f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 71503 bytes

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