Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 6ad81544efe090dc…

MALICIOUS

Office (OLE) / .DOCX

177.7 KB Created: 2020-09-18 13:57:00 Authoring application: Microsoft Office Word
MD5: 0bcd45860660158105c421fe188f5c98 SHA-1: 968ca51991c3328d90d72497a918c311d3388fdb SHA-256: 6ad81544efe090dc97267a95d4f2b0c2b8165d43517570b269c170fe436c59b6
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, specifically a Document_Open auto-execution macro, which is a common technique for Emotet. The ClamAV detection also explicitly names Emotet. The macro's use of CreateObject and obfuscated string manipulation suggests it is designed to download and execute a secondary payload, a hallmark of Emotet's downloader functionality. No specific URLs or executable payloads were directly extracted, but the presence of the macro itself is a high-confidence indicator.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9763587-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9763587-0
  • 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
d480f4e62437f12b4fdbfa09699c3791dd8e97ee1633f946eb76ef39a2f5d3e4		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20121 bytes

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