Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 d079a4cc049fc135…

MALICIOUS

Office (OLE) / .DOCX

161.2 KB Created: 2020-09-24 14:59:00 Authoring application: Microsoft Office Word
MD5: 351271ae221494c436f22dbadd2186bf SHA-1: b7e98d18e47d35f09444a0e692cd515617b664e9 SHA-256: d079a4cc049fc13598f5948eecc167893f87b507fdba72479e5c5f631e3bf7c0
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic

The file contains a malicious VBA macro, specifically a Document_Open auto-exec macro. This macro utilizes CreateObject to execute PowerShell commands, as indicated by the heuristic firings and the presence of the 'macros.bas' artifact. The ClamAV detection explicitly names this as 'Doc.Downloader.Emotet-9765780-0', strongly suggesting the Emotet family. The document body appears to be obfuscated or corrupted, but the presence of VBA auto-execution with execution tokens is a clear indicator of malicious intent, likely 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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