Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 05d3f64769c8b7a8…

MALICIOUS

Office (OLE) / .DOCX

168.1 KB Created: 2020-09-28 19:59:00 Authoring application: Microsoft Office Word
MD5: 4dd5d4dfe3ea46c94db66819fb935ba6 SHA-1: c844ab8e5efd98c7fd283c55b2fbad3a64e61c3f SHA-256: 05d3f64769c8b7a8af107f33e52cfd34f2eba0579285a57271180f903e194741
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is identified as malicious by ClamAV with a specific signature for Emotet. High-severity heuristics indicate the presence of VBA macros, specifically a Document_Open macro that uses CreateObject, suggesting an attempt to execute code upon opening. The VBA script itself is heavily obfuscated but contains calls to CreateObject and string concatenations that likely form a command or URL for payload delivery. The embedded URL, though benign, is noted.

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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