Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 77097aa987900942…

MALICIOUS

Office (OLE) / .DOC

152.5 KB Created: 2019-05-02 16:38:00 Authoring application: Microsoft Office Word
MD5: 369675e8d733357c23521758ae48612e SHA-1: 4eddecb5e4c1e9a874dfa853f0c29016935ca8cd SHA-256: 77097aa9879009420abd97243ad99b01d6f37aeb4a0f10db935af76d24071f60
262 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is identified as malicious by ClamAV with the signature 'Doc.Dropper.Emotet-6960272-0'. Critical heuristics indicate the presence of VBA macros, specifically an AutoOpen macro, which utilizes GetObject and WMI (Win32_Process.Create) to launch processes. This strongly suggests the document is designed to download and execute a secondary payload, a common characteristic of Emotet droppers.

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.Dropper.Emotet-6960272-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Emotet-6960272-0
  • 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
c1e956d46a62342fc58c5b2d599694b53fe868fa0e2702a93b71c309eb166745		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 31085 bytes

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