Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 ef0f8adbe044b90f…

MALICIOUS

Office (OLE) / .DOC

171.5 KB Created: 2020-10-27 18:11:00 Authoring application: Microsoft Office Word
MD5: 9b41d12bf709bd0140854643fe952e4e SHA-1: 0398eb5277cfb785ce63b5ea350782e00c4e8ab9 SHA-256: ef0f8adbe044b90fda85ccfcfb7ce57ee106f835c82e5ddf4ffd7a79b9a40200
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains a malicious VBA macro, specifically a Document_Open auto-execution macro, which is a common delivery mechanism for Emotet. The macro utilizes CreateObject to execute arbitrary code, and the ClamAV detection explicitly names Emotet. The embedded macros.bas file is the primary artifact containing the malicious logic.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9784450-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9784450-1
  • 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
89a7392bd1c1f3fe3b1a4c5e97fc737fc9e550b299f3eb72f43817655c9c1c0c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16436 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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