Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 4196c7477de08eff…

MALICIOUS

Office (OLE) / .DOC

141.5 KB Created: 2019-05-07 10:23:00 Authoring application: Microsoft Office Word
MD5: 8079960366b704d18938071c32d1e16b SHA-1: f29c7e3439edc9323ba727a613f42cd3ed3e4049 SHA-256: 4196c7477de08eff64b2a769a48f21543127f12c6058644082ade360ac5810e7
260 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1218 Signed Binary Proxy Execution T1059.005 Visual Basic

The sample contains VBA macros, including an AutoOpen macro, which is a common delivery mechanism for Emotet. The critical heuristic firing 'OLE_VBA_WMI_PROCESS_CREATE' indicates that the macro attempts to launch a process using WMI. This is further supported by the ClamAV detection name 'Doc.Downloader.Emotet-6964648-0', which strongly suggests the Emotet family. The macro's intent is 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-6964648-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-6964648-0
  • 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
867414fa100558e22beda31c37c10be63c1b8caa0c619b6376265b8c31ecd394		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 5344 bytes

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