Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 877b313f243240c1…

MALICIOUS

Office (OLE) / .DOC

157.8 KB Created: 2020-09-23 07:12:00 Authoring application: Microsoft Office Word
MD5: fa6c9ac6bc13aad0da1f3cf133c17d51 SHA-1: 015e3399ba74b4edf9d8645f08e35f4aa04b8fd9 SHA-256: 877b313f243240c1bf1a85a77db7e91fbb919e20add820cfd70c5e33cb848d9f
280 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains a large VBA macro, specifically a Document_Open auto-execution macro, which is a common technique for Emotet. The macro utilizes CreateObject and GetObject calls, indicating it likely attempts to download and execute a second-stage payload. The ClamAV detection explicitly names this file as 'Doc.Downloader.Emotet-9765529-0', further supporting the Emotet family attribution. The document body content is heavily obfuscated and does not provide clear user-facing text.

Heuristics 8

  • ClamAV: Doc.Downloader.Emotet-9765529-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765529-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
c7e867edff123150e7b33b07ec163ce1f6789109f89aaf47cd8d4f8ba9b93595		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21137 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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