Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0177e8b43a79a29c…

MALICIOUS

Office (OLE) / .DOCX

170.5 KB Created: 2020-09-16 21:06:00 Authoring application: Microsoft Office Word
MD5: 383ef47003df76f1f0e9a1afadf043c2 SHA-1: e700e9002609e01779fbbe61f333da322bdc2cbd SHA-256: 0177e8b43a79a29ce762f763112f16f7d07e7cd0de070fae63e9123ad5196423
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9762248-0', indicating it's a known Emotet downloader. High-severity heuristics confirm the presence of VBA macros, specifically a 'Document_Open' macro that uses 'CreateObject' to execute code. While the VBA script is heavily obfuscated, the presence of these indicators strongly suggests it's designed to download and execute a secondary payload, a common Emotet tactic.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9762248-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9762248-0
  • 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.
  • 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
399b09c8d74ca70c14382a3c60b3f313640ed0e229ce8a9c8a5d7036140d7260		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19085 bytes

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