Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 c6c7afa7966bb789…

MALICIOUS

Office (OLE) / .DOCX

210.7 KB Created: 2020-10-16 06:01:00 Authoring application: Microsoft Office Word
MD5: ca970ae304faa8bb3fc7db11fe6d563e SHA-1: 938c427ad44a3df307bbff3bb9eb4f90ad5e07fa SHA-256: c6c7afa7966bb7894acb77743a551a1cbc5574c4160726902a71386dff621ba6
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate a downloader. The presence of a VBA macro in the 'macros.bas' file, combined with the ClamAV signature, points to the Emotet family. The document body content is heavily obfuscated and appears to be a lure, but the primary malicious activity is driven by the VBA macro which is designed to download and execute a second-stage payload.

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
3863408a8bdeee0ec9a7fd53b63559adf9564fc8373ad4e3bb83f95fe3393045		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15324 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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