Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 1905e599d7246318…

MALICIOUS

Office (OLE) / .DOC

189.0 KB Created: 2020-10-21 06:35:00 Authoring application: Microsoft Office Word
MD5: a2f8394cea1857d43dfa435c2a7e8e6f SHA-1: d5ce7894cc6440c43671c8ca499e3e174c758f7c SHA-256: 1905e599d724631809846d68e01d2fcfc9b1a4cb613d6899aa36dc519947e282
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 that utilizes CreateObject, indicating malicious intent. ClamAV detection confirms this as Doc.Dropper.EmotetiBlueUpdate1020. The VBA script is heavily obfuscated but the presence of Document_open and CreateObject calls strongly suggests it's designed to download and execute a secondary payload, consistent with Emotet's typical behavior.

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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