Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 043eee7522492a5e…

MALICIOUS

Office (OLE) / .DOC

162.1 KB Created: 2021-01-12 15:16:00 Authoring application: Microsoft Office Word
MD5: 0fcd9569ef0690d4931268b090b913c1 SHA-1: b7944313d64fd0f548c16a40da2fb485c376e359 SHA-256: 043eee7522492a5e9e3026f7afb191926db12ac96ee20475ebdc26eab2993095
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 sample is a malicious Microsoft Word document containing VBA macros, specifically a Document_open macro designed to execute obfuscated code. The ClamAV detection 'Doc.Downloader.EmotetRed02224-9938637-0' strongly suggests Emotet family involvement, which commonly uses this technique to download and execute further stages. The VBA code itself is heavily obfuscated, making it difficult to determine the exact payload, but the presence of CreateObject and the auto-execution of Document_open are clear indicators of malicious intent.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
9903c97f82d4c5337bd2323ee89599175ae60759abf4f128ab8c8dd0806f85fd		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 7309 bytes

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