Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 73a9c3e774f16217…

MALICIOUS

Office (OLE) / .DOCX

172.5 KB Created: 2020-09-16 13:35:00 Authoring application: Microsoft Office Word
MD5: ab93ec17177acbf5119e3fbd12c917bf SHA-1: 5127a2a7164a6397f5e1f5cff8b79a6240c30f68 SHA-256: 73a9c3e774f162178bd0904852801acda77ebb7d3ba165e4f9aea89ede59931d
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1204.002 Malicious File

The sample contains VBA macros, specifically a Document_open macro that uses CreateObject, indicating malicious intent. ClamAV detection confirms this, identifying it as Emotet. The macro's obfuscated nature and use of string concatenation for potentially malicious commands suggest it's designed to download and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9762108-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9762108-0
  • 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
0bb2e800f836433b719494fb3a2cf1fc895dd947fc7213e26f377d26b01e1554		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 22004 bytes

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