Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 d0923c979ad2de7a…

MALICIOUS

Office (OLE) / .DOC

153.8 KB Created: 2020-10-19 20:10:00 Authoring application: Microsoft Office Word
MD5: 6a1eae8647ef1397e655c52066569682 SHA-1: 7021c1aa6dcedb5605f1338a8e120dde8589443e SHA-256: d0923c979ad2de7a491d0cff4e1b2f09b69154baed8b56cfa7246b898b000f23
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the "Document_Open" auto-execution and "CreateObject" calls, strongly indicate a malicious document. The presence of a "macros.bas" file and the "OLE_VBA_PCODE_AUTOEXEC_EXEC" firing suggest the VBA code is designed to run automatically upon opening and likely attempts to download and execute a second-stage payload. The ClamAV signature "Doc.Downloader.Emotet-9780400-0" directly attributes this behavior to the Emotet family.

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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