Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 533d38d03299d262…

MALICIOUS

Office (OLE) / .DOCX

134.6 KB Created: 2020-09-28 07:04:00 Authoring application: Microsoft Office Word
MD5: dfc43e954f6dd67168bfef67a9f0f662 SHA-1: 43bdd9611aecfb9797c9d605de749d69eea73f2f SHA-256: 533d38d03299d2625ddb8970ef32cc706718d72d7122f132a78ee6493791aafc
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is detected as Emotet by ClamAV and contains a VBA macro that executes via the Document_Open auto-exec function. The macro utilizes CreateObject, indicating it's designed to perform actions beyond simple document manipulation, likely downloading and executing a secondary payload. The presence of VBA macros and the specific detection signature strongly suggest Emotet's typical delivery mechanism.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9768657-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9768657-0
  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
e75df2f1d58eb5949c0678a2356db3178c4d0bfd05af2a59d3cebacf3557baf1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6244 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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