Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 14b7e8593c800c78…

MALICIOUS

Office (OLE) / .DOCX

130.8 KB Created: 2020-10-14 12:13:00 Authoring application: Microsoft Office Word
MD5: eb8b801651a3c735bfbb5beaed7eb129 SHA-1: e29a6bd5664b9b29ba200a5c790977aeae8b2a99 SHA-256: 14b7e8593c800c784871b10b9a2f7bcf5d7ea90634118b403d88cdb99f88f976
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The sample is a Microsoft Office document containing obfuscated VBA macros, specifically triggering a Document_Open macro and CreateObject calls. ClamAV identifies it as Doc.Downloader.Emotet-9778018-0, a known downloader family. The VBA script's primary function appears to be downloading and executing a second-stage payload, indicated by the presence of obfuscated code and calls to external resources.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9778018-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778018-0
  • 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
9ff2f6164d63cd97fef8963d2b7a6ca348ed28032df5d8d3d018a1f3d500bd9b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 9476 bytes

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