Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 29d5a0eb1f8b9388…

MALICIOUS

Office (OLE) / .DOC

156.4 KB Created: 2019-05-02 13:11:00 Authoring application: Microsoft Office Word
MD5: a333f9a0472157b93cc7dfec6c890518 SHA-1: fc49dd5323301cd8b0f7e6cffe605d5bd5d7c13e SHA-256: 29d5a0eb1f8b938839724b100c9d78b140e82567e8addd0d15bf06f98e61de90
260 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1218.011 System Binary Proxy Execution: Rundll32 T1059.005 Visual Basic

This document contains VBA macros, including an AutoOpen macro, which is a common delivery mechanism for Emotet. The critical heuristic OLE_VBA_WMI_PROCESS_CREATE indicates that the macro attempts to execute code using WMI's Win32_Process launcher. This is a strong indicator of a downloader attempting to fetch and execute a secondary payload. The ClamAV detection further confirms the malicious nature and points to the Emotet family.

Heuristics 7

  • VBA WMI Win32_Process launcher critical OLE_VBA_WMI_PROCESS_CREATE
    VBA macro builds or references a WMI moniker for Win32_Process and invokes .Create to start a command. This is a high-confidence macro execution chain that often hides the WMI class name through string concatenation or helper functions.
  • ClamAV: Doc.Malware.Emotet-6960319-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-6960319-0
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
b549cd512bf5fc7225b971bc40d1fcab04b31ff7faaef4a1da62b9cce4d4719f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 27804 bytes

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