Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 e9e9f78904bfff3c…

MALICIOUS

Office (OLE) / .DOC

122.4 KB Created: 2019-05-17 15:09:00 Authoring application: Microsoft Office Word
MD5: e087ca0440957e8260121b09dc6347ec SHA-1: c4cee345a34cca86f37a3fd8daeeccef5d0597a6 SHA-256: e9e9f78904bfff3c083ac80f14b6b67eb9548de76c70c074436c5c3be0fcd6e6
260 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains VBA macros, specifically 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 launch a process using WMI. ClamAV also detected this file as Doc.Downloader.Emotet-10001946-0. The embedded artifact 'macros.bas' is the source of these malicious macros.

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-10001946-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-10001946-0
  • 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
fd7abb310ac2c1edcee951b9d468862e54c8b1b7d6bab48a5b9081c9e2a7eba6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1397 bytes

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