Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 344a9c50e80e2db7…

MALICIOUS

Office (OLE)

134.0 KB Created: 2020-10-14 19:03:00 Authoring application: Microsoft Office Word
MD5: b8e9f15ffaf945f5cbd4fdf771aa10ba SHA-1: 0370cb7d7afc4c2ea7e8e5448274993649f3cc71 SHA-256: 344a9c50e80e2db73c5a76277f41e8020eec2a3aef55276cf9ac4947493b62bd
202 Risk Score

Malware Insights

Emotet · confidence 90%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample contains VBA macros, specifically a "Document_Open" auto-execution macro, which is a common technique for Emotet. The VBA code uses CreateObject, a known method for initiating malicious actions, and the ClamAV detection explicitly names Emotet. The obfuscated VBA script likely aims to download and execute a secondary payload, a hallmark of Emotet's infection chain.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9778091-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778091-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject 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
35ba581a7d07c242723817cd679240b29046cc2a7f4485862374591738596dda		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 9454 bytes

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