Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 466fe575959bbf84…

MALICIOUS

Office (OLE) / .DOCX

161.3 KB Created: 2020-09-24 14:59:00 Authoring application: Microsoft Office Word
MD5: 40f358acd928d2699f8e461bcc7117a1 SHA-1: 5c244c65dd854a55b1ac2e7cedc7ea4acac7f706 SHA-256: 466fe575959bbf84502d995c9dbe9eed39a8f60fc1340600094b5ff7a6c4cab2
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-9765780-0. Static analysis reveals the presence of VBA macros, specifically a Document_Open macro that utilizes CreateObject. This indicates the document is designed to automatically execute code upon opening. The DOC BODY appears to be heavily obfuscated, but the presence of VBA macros and the ClamAV detection strongly suggest a downloader or droppper functionality, characteristic of the Emotet family. The macro likely attempts to download and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9765780-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765780-0
  • 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
478e525c35da71173721eac25da86734da83f0768f80b277d373c9cc7716a5ba		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 27607 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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