Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 609666e54bf1d06e…

MALICIOUS

Office (OLE) / .DOCX

196.0 KB Created: 2020-10-21 19:03:00 Authoring application: Microsoft Office Word
MD5: e0a96f206e5931734078dd3a6c329588 SHA-1: 7ef0a1362b81a8175fc7356c14563f930647fefe SHA-256: 609666e54bf1d06e8f14165ad4f9e4ab933bfb39a33d324371a8b6a4b9c8b4de
202 Risk Score

Malware Insights

Emotet · confidence 90%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The sample is identified as malicious by ClamAV with a specific signature indicating it's a dropper for the Emotet family. The presence of VBA macros, particularly a Document_Open auto-execution macro and CreateObject calls, strongly suggests the execution of malicious code. The obfuscated VBA script is designed to deobfuscate and likely download a second-stage payload, a common Emotet tactic.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
  • 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
02a7c690f255f801ffb6158001004b72bc87e4e321bdb1878af07b39dba6d71b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 23233 bytes

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