Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 9c67d232abc4ea64…

MALICIOUS

Office (OLE) / .DOCX

170.1 KB Created: 2020-09-22 22:50:00 Authoring application: Microsoft Office Word
MD5: a52a69bf43a5dbc22e6bb3b5f49e17ff SHA-1: 3d7398c9da302293f5df853e9c6cda33bec61a97 SHA-256: 9c67d232abc4ea64aac36180f8259c7a5a52ae4ccf35ac7d5b9e6f350f5ee00b
280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file contains a critical ClamAV detection for 'Doc.Downloader.Emotet-9765458-0', indicating it is a known Emotet downloader. High-severity heuristics confirm the presence of VBA macros, specifically a 'Document_Open' auto-exec macro that utilizes 'CreateObject' and 'GetObject' calls. This strongly suggests the macro is designed to download and execute a second-stage payload. The presence of 'macros.bas' further supports this, as it is a common artifact for macro-based malware.

Heuristics 8

  • 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.
  • 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
30f2d5537902d59450c9d0d4b8e76203b657840da56dd9d07c3c9632425ddcf4		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20571 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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