Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 7f74ef7a47cc278b…

MALICIOUS

Office (OLE) / .DOC

111.6 KB Created: 2019-05-23 12:58:00 Authoring application: Microsoft Office Word
MD5: e317794d8c245e9bc0aeaede29025d5c SHA-1: c37d1d489e33282f35dd955be4b96a401a34333e SHA-256: 7f74ef7a47cc278b40c37aa4b344faeb5c4dd9cd826dc2cf06ad2b489664b39a
260 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell

The sample is a malicious DOC file containing VBA macros, specifically an AutoOpen macro that utilizes GetObject and WMI to launch a process. ClamAV identifies this as Doc.Downloader.Emotet-6978977-0, strongly suggesting the Emotet family. The macro's execution of Win32_Process via WMI indicates it's designed to download and execute a second-stage payload.

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.Downloader.Emotet-6978977-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-6978977-0
  • 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
ba7f4253e8da638e4e5b4a7fb1c9eebb181b862983faa107331186241f8bd21d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2711 bytes

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