Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 77b5804ca65e6e55…

MALICIOUS

Office (OLE) / .DOCX

169.4 KB Created: 2020-09-28 19:59:00 Authoring application: Microsoft Office Word
MD5: ccf28959dcfb431a8c98304aed69d43a SHA-1: 28dc44f813e74d74ac7dd63580adfce28f2d3a4e SHA-256: 77b5804ca65e6e556bb46c4de77e34f32705f31b967c3d171afebb4bf54671ed
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV with a specific Emotet signature. High-severity heuristics indicate the presence of VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. The obfuscated VBA script likely attempts to download and execute a second-stage payload, a common Emotet behavior.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9768661-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9768661-0
  • 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
387c5ef7909231ea8caee5f9881fb86538a4be7f74672ee227b824bdfa4a7d92		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6701 bytes

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