Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 155c98c5bd75bf5a…

MALICIOUS

Office (OLE) / .DOCX

194.1 KB Created: 2020-09-22 04:18:00 Authoring application: Microsoft Office Word
MD5: 1e26d3d135ec873338679b3e5555f8fd SHA-1: ad130c71f20b403242863580da15e54399f86ee3 SHA-256: 155c98c5bd75bf5af88a10e77dad03a2d5f54716c599088264f39a43657362e8
242 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a Microsoft Word document with a high-confidence detection for VBA macros, specifically a Document_Open macro that uses CreateObject and GetObject calls. ClamAV identifies this as Emotet. The VBA script is heavily obfuscated but the presence of the Document_Open auto-execution macro indicates an intent to run malicious code immediately upon opening the document, typical for Emotet's downloader functionality.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9764756-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9764756-0
  • 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
3b0af88f4dd9c23a17bbdbbca50e89a637a2364695c54b84b34b6c26baade961		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19032 bytes

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