Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0733e953ba1f52bb…

MALICIOUS

Office (OLE) / .DOCX

162.5 KB Created: 2020-10-27 13:32:00 Authoring application: Microsoft Office Word
MD5: 28c7233544acbee9877670135485fe6c SHA-1: 91672a53e729b01efa81ad338e333e0cf9af00e2 SHA-256: 0733e953ba1f52bb87d8be9fa084223ad405b556d65ff73351ad83e6550c9517
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains a VBA macro that is triggered by the Document_Open event. This macro utilizes CreateObject to execute obfuscated PowerShell commands. The ClamAV detection name 'Doc.Downloader.Emotet-9784225-0' strongly suggests Emotet family involvement, which commonly uses this technique to download further malicious content. The obfuscated PowerShell execution is a key indicator of a downloader's behavior.

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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