Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 13d14b40f01d0865…

MALICIOUS

Office (OLE) / .DOCX

175.6 KB Created: 2020-10-30 13:48:00 Authoring application: Microsoft Office Word
MD5: 99cd4ab65a7c0a2bcfdfcf67e7ee4a67 SHA-1: d96350f701822c784b2ef0db486bf3e4bbe3af23 SHA-256: 13d14b40f01d08656e74e969635a6cc3da85d7e7561d122d76d2e7f6a7b8960e
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a malicious Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject to execute obfuscated code. ClamAV detection identifies it as Emotet. The VBA macro is heavily obfuscated, but its intent appears to be to download and execute a secondary payload, a common Emotet behavior. The presence of the 'macros.bas' artifact and the ClamAV signature strongly support this assessment.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9785300-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9785300-0
  • 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
6ef446d7bbe59b96b37194ceef7dfc21ebc83ff1edf01838a31098c50a7e733f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 17445 bytes

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