Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0043af7d182b9d61…

MALICIOUS

Office (OLE) / .DOCX

195.9 KB Created: 2020-09-24 13:34:00 Authoring application: Microsoft Office Word
MD5: ced162107fe69248b778f33bd349e8ac SHA-1: ff567823527347d9c3bcbdcb217f4efc2cb70aa8 SHA-256: 0043af7d182b9d6145aa3d75f6ced14fbddfab10b615e6997bd426d3a23da6a7
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The file contains a high-severity VBA macro that executes upon opening the document, indicated by the OLE_VBA_DOCOPEN and OLE_VBA_PCODE_AUTOEXEC_EXEC heuristics. The macro's obfuscated code, including string concatenations, suggests it is designed to download and execute a secondary payload. ClamAV detection as 'Doc.Downloader.EmotetRed02224-9938637-0' strongly points to the Emotet family.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
a837a74c15cb3b2b06d70805c30f06a3d350fde6faccbab7be73edc42a69bb80		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25402 bytes

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