Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 12c68e1e99b28157…

MALICIOUS

Office (OLE) / .DOCX

189.0 KB Created: 2020-10-21 20:47:00 Authoring application: Microsoft Office Word
MD5: a07dcac9fc0ed6e016bae6b4e07a71d0 SHA-1: bcef4d63795a6084e4636f1cd304a410954c9ba1 SHA-256: 12c68e1e99b281571fac81330a1178884fa80cd2487d5687440f1df72e8fe9f6
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 file is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that is designed to execute automatically. Heuristics indicate the use of CreateObject and p-code auto-execution, common for malware droppers. The ClamAV signature 'Doc.Dropper.EmotetiBlueUpdate1020-9780531-0' strongly suggests this is an Emotet variant used for dropping additional malware. The VBA script itself is heavily obfuscated but its structure and the presence of auto-execution point towards downloading and executing a secondary payload.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
  • 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
de68eb219c86c839b194b174abd2b170f818ab76547e269289797596310c601e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 23214 bytes

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