Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 1027157b8a3e3b70…

MALICIOUS

Office (OLE) / .DOCX

169.1 KB Created: 2020-09-22 22:50:00 Authoring application: Microsoft Office Word
MD5: 19edbd40e28469ee28dc4631f63a0549 SHA-1: 16ab6f6445109d469c9c37bdc8e198cad93f22d4 SHA-256: 1027157b8a3e3b70dd47ea7c0e497544916e9756ff1e3aaafc732eabe77ff26e
242 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The file contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for Emotet. The ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet-9765458-0'. The VBA code is heavily obfuscated but the presence of CreateObject and GetObject calls, along with the macro's auto-execution, strongly suggests it's designed to download and run a secondary payload. No specific download URL was directly extracted, but the macro itself is the primary IOC.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9765458-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765458-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
30f2d5537902d59450c9d0d4b8e76203b657840da56dd9d07c3c9632425ddcf4		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20571 bytes

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