Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 eafccb99b1d64049…

MALICIOUS

Office (OLE) / .DOCX

150.7 KB Created: 2020-09-29 07:27:00 Authoring application: Microsoft Office Word
MD5: f798c24e145ee14b7e44dba5536f082d SHA-1: 6a84f4c39caee9fb85b7604f69dbe766d59bc51b SHA-256: eafccb99b1d640491547d4449feb5cec8d14374e9d8cc833f6152cd684b3f5e7
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection explicitly identifies this file as 'Doc.Downloader.Emotet-9769096-0', strongly suggesting the Emotet family. High-severity heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject, indicating it's designed to run code immediately upon opening. The presence of a 'macros.bas' artifact further supports this. The macro's likely intent is to download and execute a second-stage payload, a common Emotet behavior.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9769096-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9769096-0
  • 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
7fe684c304685628252d7c0111d3e33f34436ae7810b3dde5f2aa07edc7bb621		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 8166 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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