Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 02e90a20f8f56520…

MALICIOUS

Office (OLE) / .DOCX

167.8 KB Created: 2020-09-24 20:34:00 Authoring application: Microsoft Office Word
MD5: f7265cf757da4c7f38ec3d9e48ce78f8 SHA-1: 89cd917daef21e6a329aae14f0c2c6cdfba910d2 SHA-256: 02e90a20f8f565208e5d5723be87378e2c83733654b73e88667fcbed0c61ceab
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 contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for Emotet. The ClamAV detection explicitly names Emotet. The macros utilize CreateObject and obfuscated string manipulation, indicating an attempt to download and execute a secondary payload. The presence of a Document_Open macro strongly suggests this document was delivered as a spearphishing attachment.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9765780-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765780-0
  • 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
20065c1f06a22de094d8fc279802a5adedc919206be7ae0d9cd9ee9d315ea30b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25868 bytes

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