Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 8aac323bb90b4aa4…

MALICIOUS

Office (OLE) / .DOCX

184.9 KB Created: 2020-12-23 07:47:00 Authoring application: Microsoft Office Word
MD5: 722acb1f9c3be46178955f7c0fd2d046 SHA-1: f3823400b584cc8727cd1f8b0b627f234a67bf18 SHA-256: 8aac323bb90b4aa43f663e31e58a2973cf36b32fc5acfeec8d40fca09a50a7b5
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate a malicious document. The presence of VBA macros suggests the document is designed to download and execute a second-stage payload, consistent with Emotet's typical behavior. The document body's obfuscated text further supports the malicious intent.

Heuristics 7

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
d5578521430d19d3e1a741e6facd5db8ed236e25c6fc3d692889ddd7a6d225bf		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 8783 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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