Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 c8f5d15b7cb1e47d…

MALICIOUS

Office (OLE) / .DOCX

168.6 KB Created: 2020-10-20 05:21:00 Authoring application: Microsoft Office Word
MD5: 44ca5818fdc66b725535762fdf5b51cf SHA-1: ddcecc4652b77159a6774c2b78a69a61d1aab589 SHA-256: c8f5d15b7cb1e47d61d7ffd3f30a329ed67e40fb4053208804d3d99b595575dc
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample was detected as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9780828-0', indicating it functions as a downloader. High-severity heuristics confirm the presence of VBA macros, specifically a 'Document_Open' macro that utilizes 'CreateObject' for execution. This strongly suggests the macro is designed to download and execute a second-stage payload. The embedded URL, though benign according to reputation, is likely a placeholder or part of a larger obfuscation scheme.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9780828-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9780828-0
  • 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
4588401bd42bd39b75b9dcc9e4ef6377522769140839001e1d2af1038d6019be		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 17619 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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