Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 16ae43a8c77de4d2…

MALICIOUS

Office (OLE) / .DOCX

180.5 KB Created: 2020-10-21 10:22:00 Authoring application: Microsoft Office Word
MD5: 8c813426176f69c856c0bc76355199ff SHA-1: 449e31c69398b1782451b225182dbb84bed6fc6b SHA-256: 16ae43a8c77de4d2af1864c4e5de2fc5b91136fbcfc8bbb60f90d2478a3408f9
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is identified as malicious by ClamAV with the signature 'Doc.Dropper.EmotetiBlueUpdate1020-9780531-0', indicating it's a dropper. Heuristics confirm the presence of VBA macros, including a Document_Open auto-execution macro and CreateObject calls, which are commonly used to download and execute secondary payloads. The obfuscated nature of the VBA script suggests an attempt to evade detection.

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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