Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 7288d0d782e47ee0…

MALICIOUS

Office (OLE) / .DOCX

163.5 KB Created: 2020-10-27 13:32:00 Authoring application: Microsoft Office Word
MD5: 6bfd0b456cb695507b90dcbed87fe46c SHA-1: 38180eebc86292317d8e9e60bfd7c6e0f3c3aa15 SHA-256: 7288d0d782e47ee06bc27a14c5ac13996e4ecd7a94fa0658a67a2f433b433f3d
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for Emotet. The macro utilizes CreateObject to execute obfuscated PowerShell commands. The ClamAV detection explicitly names Emotet, further supporting this classification. The primary function of the script appears to be downloading and executing a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9784225-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9784225-0
  • 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
aaf531f7a5bc5489efc2142934ae4807c7a8fc52a02b1483f9210c80918c01e7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16228 bytes

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