Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 8de8ea6861abc663…

MALICIOUS

Office (OLE) / .DOCX

189.6 KB Created: 2020-09-18 14:02:00 Authoring application: Microsoft Office Word
MD5: 58c9a2b604d3590bc8230ce6cd0140eb SHA-1: a3a4b43791a3eedf080bed10c557a6f4295b6255 SHA-256: 8de8ea6861abc663aa24c26703bde4b83981117f06c438a6d82c295d178ce970
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The file is a Microsoft Office document containing a VBA macro that is set to execute automatically via the Document_Open event. This macro utilizes CreateObject, a common technique for downloading and executing additional malicious content. ClamAV detection explicitly identifies this as 'Doc.Downloader.Emotet-9763588-0', strongly suggesting Emotet family attribution. The macro's intent is to download and execute a second-stage payload, consistent with Emotet's typical behavior.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9763588-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9763588-0
  • 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
439e57830647c2aa4289de5e25d2759440b9e1601599acc03def2897db1f3da9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20114 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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