Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 da7ec5afa8db927c…

MALICIOUS

Office (OLE) / .DOCX

162.5 KB Created: 2020-09-25 11:29:00 Authoring application: Microsoft Office Word
MD5: 7fcc83eb2a2326a89a3764d3d05ca105 SHA-1: 0262cfa8b597e270c2e866bcfacfc8cbf3359549 SHA-256: da7ec5afa8db927c31e6681e3c5b1a24478b5914c09ef085217577930f80fc11
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is a Microsoft Office document containing a malicious VBA macro, as indicated by multiple high-severity heuristics including OLE_VBA_MACROS, OLE_VBA_DOCOPEN, and OLE_VBA_PCODE_AUTOEXEC_EXEC. The ClamAV detection explicitly names this as 'Doc.Downloader.Emotet-9767804-1'. The macro is designed to execute a PowerShell command, which is a common technique for downloading and executing further stages of malware. The document body appears to be heavily obfuscated or corrupted, but the presence of VBA macros and the ClamAV signature strongly suggest Emotet activity.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9767804-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9767804-1
  • 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
426aca538f654441d66e245a00bfc928dacf37832bbf946df52799fa3650ecb1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 24489 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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