Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 4ff425a974e9720c…

MALICIOUS

Office (OLE) / .DOC

169.5 KB Created: 2020-09-16 21:06:00 Authoring application: Microsoft Office Word
MD5: cc8fddd2aa912d152eefc41ee07fe25b SHA-1: c28c456dd8646ceafc9f3463197f69d7fe520476 SHA-256: 4ff425a974e9720cc0bf4d6ae70d4d57ec4edba20d9949e1c2dce87d6f7b20b8
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate a malicious macro downloader. The presence of the 'Emotet' family in the ClamAV signature further supports this classification. The VBA macros are designed to execute automatically upon opening the document, likely to download and run a second-stage payload. The document body is heavily obfuscated and does not provide clear textual lures.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9762248-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9762248-0
  • 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
399b09c8d74ca70c14382a3c60b3f313640ed0e229ce8a9c8a5d7036140d7260		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19085 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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