Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 3cc91108bd9d95f6…

MALICIOUS

Office (OLE) / .DOCX

154.9 KB Created: 2020-10-19 12:20:00 Authoring application: Microsoft Office Word
MD5: 673468aeba47e9c8a0eeaf672cd2411f SHA-1: c126056ae9d82aaa6d60d65c7207ce7cd658de82 SHA-256: 3cc91108bd9d95f641996cfbde558f3ef6f6e02cd25106217a2d6dfab9da1f30
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains VBA macros, specifically a Document_Open auto-exec macro, which is a strong indicator of malicious intent. The ClamAV detection explicitly names this as Emotet, a known downloader family. The macro's execution of CreateObject suggests it's designed to download and execute a second-stage payload. The obfuscated document body content is likely a lure to encourage macro execution.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9780400-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9780400-0
  • 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
1b934c7a6a945d183f556fc460816db0116e14a6233b4c84dca18770500f607e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15515 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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