Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 6e66d8867c0662cf…

MALICIOUS

Office (OLE) / .DOCX

161.0 KB Created: 2020-09-24 14:59:00 Authoring application: Microsoft Office Word
MD5: bb2741248b19b165380971e05fa62d6c SHA-1: 3171a1c1fe2abe31049d438c1ed90d924c04f4b9 SHA-256: 6e66d8867c0662cf0e56a6f089023982569672f6775772dc6c4015e6a65f25c8
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 macro, which is a common technique for Emotet. The macros are heavily obfuscated but appear to be constructing and executing PowerShell commands. The ClamAV detection explicitly names Emotet, reinforcing this classification. The primary function of the VBA script is to download and execute a second-stage payload via PowerShell.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9765780-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765780-0
  • 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
478e525c35da71173721eac25da86734da83f0768f80b277d373c9cc7716a5ba		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 27607 bytes

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