Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 48cf59d8b7c9372f…

MALICIOUS

Office (OLE)

164.6 KB Created: 2020-09-15 19:31:00 Authoring application: Microsoft Office Word
MD5: 6a579ebff25adef9f8febd6493e2d831 SHA-1: 4dbe52cd79f0489298b3499591443586c0a31584 SHA-256: 48cf59d8b7c9372f65bd02e6ca168e0651fdbcc3b7330dd22b34a5df23c384f1
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. ClamAV identifies this as Doc.Downloader.Emotet-9761754-0. The presence of a 'macros.bas' file and the Emotet family detection strongly indicate a downloader functionality, likely to fetch and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9761754-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9761754-0
  • 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
75714e73d3e8750b3760209a7997fccc8b6d96f31b59fa1d20ad2b0ef4583864		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25430 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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