Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 68829c16b0c9bb2f…

MALICIOUS

Office (OLE) / .DOCX

158.6 KB Created: 2020-09-23 09:30:00 Authoring application: Microsoft Office Word
MD5: de97f97810a587f01f72af71b17c56c2 SHA-1: 23fff7401f9c93a0badb718cc7420c6b80e3c08d SHA-256: 68829c16b0c9bb2f8079fe163e05ccc8662973e4ce79afc0693733937fad88e4
242 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The sample exhibits high-severity heuristics for VBA macros, including a Document_Open auto-execution macro and CreateObject/GetObject calls, strongly indicating malicious intent. ClamAV detection confirms this, identifying it as 'Doc.Downloader.Emotet-9765530-0'. The VBA script, though obfuscated, uses array manipulation and string concatenation typical of Emotet downloaders, aiming to fetch and execute a secondary payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9765530-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765530-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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
f2279a4d422668b89c293cd032386976cc753a5ff4104c672bc17e53928a662a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20002 bytes

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