Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 f732dff0368dd8ff…

MALICIOUS

Office (OLE) / .DOCX

171.0 KB Created: 2020-09-22 18:42:00 Authoring application: Microsoft Office Word
MD5: 23d1f775056b5fb32e002848bf26c33c SHA-1: d815371ef81c8ebcab220fac19a1d59e40ac681c SHA-256: f732dff0368dd8ff983021f4786d2c04ecb2f9196327138f25d6ca5272c9b556
280 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is a Microsoft Office document containing a Document_Open VBA macro. This macro utilizes CreateObject and GetObject calls, indicative of malicious intent. ClamAV detection confirms this, identifying it as 'Doc.Downloader.Emotet-9765458-0'. The presence of the 'macros.bas' artifact further supports the macro-based execution. The primary function appears to be downloading and executing a second-stage payload.

Heuristics 8

  • ClamAV: Doc.Downloader.Emotet-9765458-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765458-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
4c1d45ab400998e9849e03fb488749a88ec1375f45fc179ad034e6ee3d25ecfd		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21065 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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