Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 7837dbf02d1beaad…

MALICIOUS

Office (OLE) / .DOCX

189.0 KB Created: 2020-10-21 20:47:00 Authoring application: Microsoft Office Word
MD5: 6684037250792d191ebd6b69af18c238 SHA-1: baca8ada9f3f99f2c3e538587916489b6993ed73 SHA-256: 7837dbf02d1beaad4e4026d866883697738cc93fcb1ef554711435e40eb847bd
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1204.002 Malicious File

The file is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that executes when the file is opened. Heuristics indicate the use of CreateObject, a common technique for executing malicious code. The ClamAV detection name 'Doc.Dropper.EmotetBlueUpdate1020' strongly suggests the Emotet family and a dropper functionality, implying the macro's purpose is to download and execute a secondary payload. No specific URLs or network indicators were extracted, but the presence of the macro itself is the primary IOC.

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
de68eb219c86c839b194b174abd2b170f818ab76547e269289797596310c601e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 23214 bytes

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