Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 14b8acf04483277a…

MALICIOUS

Office (OLE) / .DOCX

194.5 KB Created: 2020-09-16 06:48:00 Authoring application: Microsoft Office Word
MD5: ab5da4de82eb7d0de2992cc6f880af8e SHA-1: 0d18984f95fca52b5d1b35fe73cd78d07a7dcceb SHA-256: 14b8acf04483277af0342148ad78291ceb2393d22002c123a588e6b76c9c9d3d
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is identified as malicious by ClamAV with the signature 'Doc.Malware.Emotet-9762408-0', strongly indicating the Emotet family. High-severity heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that utilizes CreateObject. This macro is designed to execute arbitrary code, likely to download and run a second-stage payload. While the VBA script is heavily obfuscated, the overall behavior points to a macro-based downloader.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9762408-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9762408-0
  • 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
df4fb732414a2f9f369567b5a31d1b266832fcbd15a8b5f56fa79c20074a71e7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25460 bytes

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