Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 b31a6a3d9045708b…

MALICIOUS

Office (OLE) / .DOC

172.1 KB Created: 2020-09-23 04:35:00 Authoring application: Microsoft Office Word
MD5: 42fe11d8c8d9ea2a930df91ece8bf958 SHA-1: 72b3e24afd70a364e5f591dbd28262b773b15a14 SHA-256: b31a6a3d9045708b31a63ffb6de2be03515ca6097216e4027fa0c11d6f52a1d0
280 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 Document_Open VBA macro that is automatically executed upon opening the document. This macro utilizes CreateObject and GetObject calls, which are commonly used by downloaders to fetch and execute additional payloads. The ClamAV detection explicitly identifies this as 'Doc.Downloader.Emotet-9765458-0', strongly suggesting the Emotet family and a downloader attack pattern.

Heuristics 8

  • ClamAV: Doc.Downloader.Emotet-9765458-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765458-0
  • 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
4b5417dbd98c86686e3f5f9c6557dfc9adc0cd727a7e10c1fb3ee22c8d8e412b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20383 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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