Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 846e5913124d7032…

MALICIOUS

Office (OLE) / .DOC

189.0 KB Created: 2020-10-21 06:35:00 Authoring application: Microsoft Office Word
MD5: 3bff6354b6cab1a8113078bd57cba2e2 SHA-1: 50add04ed28e5abbaa16d28d5fddd6e0e9903165 SHA-256: 846e5913124d7032c01dffc200b7250ef349a517df8653d0e92ba024b61de295
202 Risk Score

Malware Insights

Emotet · confidence 85%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for initial execution. The ClamAV detection name 'Doc.Dropper.EmotetiBlueUpdate1020-9780531-0' strongly suggests the Emotet family and a dropper functionality. The VBA code appears heavily obfuscated, but the presence of CreateObject and the auto-execution macro indicates an attempt to download and execute a secondary payload. The embedded URL is benign, but the overall behavior points to a malicious dropper.

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
f96fcb8cc4916d97c835c4422355f14f0c9757157ab8f3fd4f7e89ea3c4a99e6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20702 bytes

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