Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0f3dbee1ebeb3871…

MALICIOUS

Office (OLE) / .DOCX

101.1 KB Created: 2020-09-29 17:52:00 Authoring application: Microsoft Office Word
MD5: d431272fbac932330835d983fe72a66f SHA-1: f6a43c0aaa80fc068454c7b534ba3a7f6696e471 SHA-256: 0f3dbee1ebeb3871f632007621f8b55d0be54f9a867fd252cb87d84a00d26f5b
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate or Obfuscate Malicious Code

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating malicious intent. ClamAV detection confirms it as 'Doc.Downloader.Emotet-9769356-0', a known downloader. The VBA code is heavily obfuscated, suggesting an attempt to hide its functionality, which likely involves downloading and executing a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9769356-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9769356-0
  • 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
77f0fc2bd0d5c985be4d4cb3501afb191ffadc98be204ef2c40c091585c5d90a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10395 bytes

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