Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 b548be3fe343498e…

MALICIOUS

Office (OLE) / .DOC

154.2 KB Created: 2020-10-19 20:10:00 Authoring application: Microsoft Office Word
MD5: d774de0ee1a900496d760216e311e625 SHA-1: 7d93ff8a9b50ad83c0c1945fdcd242edcb51085d SHA-256: b548be3fe343498e82f9fb62fe50ccb099b09df567f62a6a557a14f5d3773fbe
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The critical ClamAV detection and high-severity heuristics for OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC indicate the presence of a malicious VBA macro designed to execute code. The macro's auto-execution via Document_Open and use of CreateObject strongly suggest it's a downloader. The ClamAV signature 'Doc.Downloader.Emotet-9780400-0' directly attributes this sample to the Emotet family. The embedded URL, though benign in reputation, is part of the document's structure and was likely intended to fetch the secondary payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9780400-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9780400-0
  • 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
2d3ce3834af78f24fa31a527ad1e694aefe01bd9c74b26ec94954a5af657ad56		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15599 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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