Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 f28f62f33ff6ea0d…

MALICIOUS

Office (OLE) / .DOC

147.9 KB Created: 2019-05-01 17:22:00 Authoring application: Microsoft Office Word
MD5: 594a959785c69fefff5a13d8fe8af451 SHA-1: 1ca134ac20e1415280405de21b03d4826719b8f0 SHA-256: f28f62f33ff6ea0d8d9708e54142e83603afe0bcdcf1206bca2f2dfa00e05b0c
260 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

The sample is a malicious OLE document containing VBA macros, specifically an AutoOpen macro that utilizes GetObject and WMI to launch a process. This is consistent with Emotet's known behavior of dropping and executing further stages of malware. The ClamAV detection name 'Doc.Dropper.Emotet-6959731-0' strongly suggests 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.Dropper.Emotet-6959731-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Emotet-6959731-0
  • 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
a14fa4aea6b33011cde7ca4c903ecee35b9c41c88e64cebb1aba0f0ccbfa6567		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20916 bytes

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