Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 710beefc4939b7fe…

MALICIOUS

Office (OLE) / .DOCX

171.6 KB Created: 2020-09-22 18:42:00 Authoring application: Microsoft Office Word
MD5: be3df68c9efb54d5311d16cf50cc156a SHA-1: e3a60ec39447ea5db2e6a788cf3d5e651ba804ba SHA-256: 710beefc4939b7fe4e0362f66fd592fc87a04fff8aacf8424eb0bd4858115fb6
242 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that executes upon opening. Heuristics indicate the use of CreateObject and GetObject, common for malware execution. ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet-9765458-0', strongly suggesting the Emotet family and a downloader functionality. The VBA script itself is heavily obfuscated but the presence of the Document_open macro and the ClamAV signature point to a malicious downloader.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9765458-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765458-0
  • 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
4c1d45ab400998e9849e03fb488749a88ec1375f45fc179ad034e6ee3d25ecfd		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21065 bytes

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