Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 7f4c13e3bad8c957…

MALICIOUS

Office (OLE) / .DOCX

162.0 KB Created: 2020-10-27 13:32:00 Authoring application: Microsoft Office Word
MD5: 4d28c8dbe48e56d3c1109f1388fe7792 SHA-1: 90b8190d96f3d78bb3dd7b8395ace2f3fc162955 SHA-256: 7f4c13e3bad8c957739d3fbcf531671bc4d3f04937292f687a6e707c1da81770
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 Emotet infection vector. Heuristics indicate the use of CreateObject and p-code execution, suggesting the macros are designed to run obfuscated commands. The ClamAV detection explicitly names this as an Emotet downloader. The obfuscated VBA script likely attempts to execute PowerShell to download and run 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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