Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 646a6255703c6930…

MALICIOUS

Office (OLE) / .DOCX

180.5 KB Created: 2020-10-21 10:22:00 Authoring application: Microsoft Office Word
MD5: f82f2d97dd89c0cb9663d3f111fe1af2 SHA-1: d172ca4f4126a6ecd821939db3dd7655f86ca401 SHA-256: 646a6255703c69300050aa3e11c0b46de7e6cfb836af92f0490328ab5dd13a7c
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a malicious Office document containing VBA macros, specifically a Document_Open macro that utilizes CreateObject. ClamAV identifies it as 'Doc.Dropper.EmotetiBlueUpdate1020-9780531-0', strongly suggesting it's a dropper for the Emotet banking trojan. The VBA script, though obfuscated, is designed to execute a payload, likely downloaded from a remote source.

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
2d652a5f62c7cd7db265ab6f01298582724932c4485a1fde21ad075960ba4c72		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20722 bytes

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