Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5f6f6797c37bee11…

MALICIOUS

Office (OLE) / .DOCX

151.0 KB Created: 2020-09-29 07:27:00 Authoring application: Microsoft Office Word
MD5: cb7a749c28acb7c6ed0d473dfa6d10a8 SHA-1: 52abe6b1c2afb1442054de1134547a810444166e SHA-256: 5f6f6797c37bee110a5304856e2cd815e090fb9b40e67a1392d3a4d7310661d9
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 Word document with VBA macros, specifically triggering a Document_Open auto-execution macro. Heuristics indicate the use of CreateObject, a common technique for downloading and executing payloads. ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet-9769096-0', strongly suggesting Emotet family and a downloader role. The obfuscated VBA code likely constructs and executes a command to fetch and run a secondary payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9769096-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9769096-0
  • 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
7fe684c304685628252d7c0111d3e33f34436ae7810b3dde5f2aa07edc7bb621		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 8166 bytes

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