Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 cc98ace38a747835…

MALICIOUS

Office (OLE) / .DOC

186.7 KB Created: 2020-09-16 22:59:00 Authoring application: Microsoft Office Word
MD5: 701137f35dbb72148842f445cd34690b SHA-1: 0e07004825ed452c5fbd4896efa13ce0735374d0 SHA-256: cc98ace38a747835ad821cd73e356a1f9f6ffb78e25cf3a0395cad87795c0565
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is a Microsoft Office document containing VBA macros, specifically triggering a Document_Open auto-execution macro. Heuristics indicate the use of CreateObject, a common technique for downloading and executing payloads. The ClamAV detection explicitly names this as 'Doc.Downloader.Emotet-9762305-0', strongly suggesting the Emotet family. The presence of the 'macros.bas' artifact further supports the macro-based execution. The document body is heavily obfuscated and unreadable, indicating it's likely a lure to enable macros.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9762305-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9762305-0
  • 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.
  • 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
c74a4e0e1e8046236a4698925940d43110d502cff010754883e948c4e1efb894		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19088 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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