Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 4637b26a9ecb444c…

MALICIOUS

Office (OLE) / .DOCX

154.3 KB Created: 2020-09-23 06:50:00 Authoring application: Microsoft Office Word
MD5: f836eadce436717492fedebd692fe682 SHA-1: f421542c87fc2828c76f53da2fdf41eb2298123b SHA-256: 4637b26a9ecb444cb7b4ac7227ece0a2a58c9fc83545dcfb15f8c3011458e675
280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample was detected as malicious by ClamAV with the signature Doc.Downloader.Emotet-9765526-0, indicating it is likely an Emotet downloader. High-severity heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject and GetObject calls. This strongly suggests the macro is designed to download and execute a second-stage payload. The document body content appears to be malformed or obfuscated, providing no clear user-facing lure.

Heuristics 8

  • ClamAV: Doc.Downloader.Emotet-9765526-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765526-0
  • 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
b9cffb0e79babc4a34c180b4e03d44a772a85b301d6c58e52fd57eb504592664		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19838 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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