Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 bf10b7e9f1ff0345…

MALICIOUS

Office (OLE) / .DOCX

131.4 KB Created: 2020-09-29 22:12:00 Authoring application: Microsoft Office Word
MD5: c79dce54ab2fbc9517fa036f5bd08ce0 SHA-1: 0bf1e45d8e103062c277c3a2b39151bf6f5d1d82 SHA-256: bf10b7e9f1ff0345f426df6b7da95cdb75284d378f7ea29d192e24623e35f3a5
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains a malicious VBA macro, specifically a Document_Open auto-exec macro, which is a common delivery mechanism for Emotet. The macro utilizes CreateObject to likely download and execute a second-stage payload. The ClamAV detection explicitly names this file as 'Doc.Downloader.Emotet-9769437-0', strongly indicating the Emotet family. The document body appears to be obfuscated or corrupted, providing no direct user-facing lure.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9769437-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9769437-0
  • 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
46ea4f5c4c1cab321c0ffaa5340d45e7ba78bb5fcec47c12e0336c19b81c43df		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10333 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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