Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 5a7087081eb26bcb…

MALICIOUS

Office (OLE)

164.1 KB Created: 2020-09-15 19:31:00 Authoring application: Microsoft Office Word
MD5: 8f0a96d88ce1735e768e3b007a2027b9 SHA-1: 5c871bf05d02c7f23e78f2927b68a7be9eea2cad SHA-256: 5a7087081eb26bcb32ed31747d75c75ffb62a1ed796fb4f08ebb3a2f9e32e09a
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-9761754-0. High-severity heuristics indicate the presence of a Document_Open VBA macro that uses CreateObject to execute obfuscated code. This macro likely functions as a downloader for a second-stage payload, a common characteristic of the Emotet family.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9761754-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9761754-0
  • 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
75714e73d3e8750b3760209a7997fccc8b6d96f31b59fa1d20ad2b0ef4583864		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25430 bytes

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