Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 10f4a118d75e59c1…

MALICIOUS

Office (OLE) / .DOCX

145.0 KB Created: 2020-09-29 22:29:00 Authoring application: Microsoft Office Word
MD5: 8b64bd78507cff7e1cd87190b9806542 SHA-1: 41a59723833202c8a2cb5aa7a07beea6c61c6a6c SHA-256: 10f4a118d75e59c1f0ae83e7e44c9553fd6925a4bcf21a4cb62559c38c550147
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains VBA macros, including an auto-executing 'Document_Open' macro that utilizes 'CreateObject'. This is a common pattern for Emotet malware to download and execute a secondary payload. The ClamAV detection also explicitly names Emotet. The obfuscated VBA code and the presence of an auto-executing macro strongly indicate malicious intent.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9769425-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9769425-0
  • 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
236c4e22a64ac61d77ecd3058e389c25a424fb288d33e5ff92abfd3f1b24ea8c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10347 bytes

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